/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:30:46,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:30:46,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:30:46,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:30:46,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:30:46,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:30:46,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:30:46,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:30:46,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:30:46,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:30:46,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:30:46,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:30:46,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:30:46,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:30:46,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:30:46,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:30:46,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:30:46,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:30:46,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:30:46,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:30:46,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:30:46,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:30:46,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:30:46,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:30:46,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:30:46,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:30:46,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:30:46,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:30:46,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:30:46,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:30:46,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:30:46,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:30:47,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:30:47,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:30:47,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:30:47,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:30:47,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:30:47,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:30:47,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:30:47,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:30:47,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:30:47,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:30:47,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:30:47,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:30:47,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:30:47,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:30:47,062 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:30:47,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:30:47,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:30:47,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:30:47,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:30:47,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:30:47,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:30:47,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:30:47,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:30:47,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:30:47,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:30:47,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:30:47,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:30:47,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:30:47,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:30:47,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:30:47,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:30:47,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:30:47,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:30:47,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:30:47,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:30:47,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:30:47,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:30:47,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:30:47,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:30:47,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:30:47,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:30:47,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:30:47,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:30:47,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:30:47,503 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:30:47,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:30:47,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5916a0c50/6b1a6bb33af5409594263c8dddb66bd5/FLAG20979e038 [2020-10-27 05:30:48,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:30:48,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:30:48,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5916a0c50/6b1a6bb33af5409594263c8dddb66bd5/FLAG20979e038 [2020-10-27 05:30:48,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5916a0c50/6b1a6bb33af5409594263c8dddb66bd5 [2020-10-27 05:30:48,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:30:48,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:30:48,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:30:48,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:30:48,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:30:48,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:30:48" (1/1) ... [2020-10-27 05:30:48,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494bc2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:48, skipping insertion in model container [2020-10-27 05:30:48,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:30:48" (1/1) ... [2020-10-27 05:30:48,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:30:48,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:30:48,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:30:48,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:30:49,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:30:49,152 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:30:49,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49 WrapperNode [2020-10-27 05:30:49,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:30:49,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:30:49,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:30:49,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:30:49,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... [2020-10-27 05:30:49,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:30:49,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:30:49,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:30:49,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:30:49,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:30:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:30:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:30:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:30:49,360 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:30:49,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:30:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:30:49,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:30:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:30:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:30:49,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:30:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:30:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:30:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:30:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:30:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:30:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:30:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:30:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:30:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:30:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:30:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:30:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:30:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:30:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:30:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:30:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:30:50,453 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:30:50,454 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:30:50,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:30:50 BoogieIcfgContainer [2020-10-27 05:30:50,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:30:50,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:30:50,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:30:50,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:30:50,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:30:48" (1/3) ... [2020-10-27 05:30:50,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:30:50, skipping insertion in model container [2020-10-27 05:30:50,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:30:49" (2/3) ... [2020-10-27 05:30:50,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:30:50, skipping insertion in model container [2020-10-27 05:30:50,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:30:50" (3/3) ... [2020-10-27 05:30:50,476 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:30:50,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:30:50,504 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:30:50,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:30:50,543 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:30:50,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:30:50,544 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:30:50,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:30:50,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:30:50,544 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:30:50,544 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:30:50,544 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:30:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2020-10-27 05:30:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 05:30:50,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:50,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:30:50,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:50,586 INFO L82 PathProgramCache]: Analyzing trace with hash 308652574, now seen corresponding path program 1 times [2020-10-27 05:30:50,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:50,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399420359] [2020-10-27 05:30:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:51,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:56,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:56,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 05:30:56,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:30:56,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:30:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:56,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:30:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:30:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:30:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:30:56,516 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:30:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:56,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:56,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 05:30:56,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:56,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:30:56,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:30:56,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399420359] [2020-10-27 05:30:56,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:56,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:30:56,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862772827] [2020-10-27 05:30:56,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:30:56,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:56,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:30:56,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:30:56,662 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 6 states. [2020-10-27 05:30:57,122 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:30:58,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:58,078 INFO L93 Difference]: Finished difference Result 242 states and 388 transitions. [2020-10-27 05:30:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:30:58,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-27 05:30:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:58,094 INFO L225 Difference]: With dead ends: 242 [2020-10-27 05:30:58,095 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 05:30:58,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:30:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 05:30:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-27 05:30:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 05:30:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 187 transitions. [2020-10-27 05:30:58,165 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 187 transitions. Word has length 92 [2020-10-27 05:30:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:58,169 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 187 transitions. [2020-10-27 05:30:58,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:30:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 187 transitions. [2020-10-27 05:30:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 05:30:58,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:58,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:30:58,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:30:58,180 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:58,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2029983449, now seen corresponding path program 1 times [2020-10-27 05:30:58,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:58,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113909554] [2020-10-27 05:30:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:03,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:03,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 05:31:03,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:31:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:31:03,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:31:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:31:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:31:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:31:03,684 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:03,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:03,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:03,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:31:03,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:31:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:31:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:03,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113909554] [2020-10-27 05:31:03,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:03,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:31:03,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420775665] [2020-10-27 05:31:03,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:31:03,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:03,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:31:03,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:31:03,767 INFO L87 Difference]: Start difference. First operand 140 states and 187 transitions. Second operand 10 states. [2020-10-27 05:31:04,204 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:31:05,613 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 05:31:06,031 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:31:06,443 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:31:06,839 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:07,212 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:31:07,604 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:31:08,060 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:31:08,455 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:31:08,929 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:31:09,385 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:09,817 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:31:10,182 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:10,378 INFO L93 Difference]: Finished difference Result 1302 states and 2007 transitions. [2020-10-27 05:31:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:31:10,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-27 05:31:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:10,397 INFO L225 Difference]: With dead ends: 1302 [2020-10-27 05:31:10,397 INFO L226 Difference]: Without dead ends: 1219 [2020-10-27 05:31:10,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:31:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-27 05:31:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 220. [2020-10-27 05:31:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-27 05:31:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 313 transitions. [2020-10-27 05:31:10,496 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 313 transitions. Word has length 92 [2020-10-27 05:31:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:10,499 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 313 transitions. [2020-10-27 05:31:10,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:31:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 313 transitions. [2020-10-27 05:31:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:10,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:10,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:10,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:31:10,510 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:10,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:10,513 INFO L82 PathProgramCache]: Analyzing trace with hash 340294982, now seen corresponding path program 1 times [2020-10-27 05:31:10,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:10,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187941423] [2020-10-27 05:31:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:12,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:15,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:31:15,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:31:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:31:15,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:31:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 05:31:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:15,986 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:16,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:16,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:16,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:16,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:31:16,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:16,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:16,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187941423] [2020-10-27 05:31:16,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:16,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:31:16,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886506871] [2020-10-27 05:31:16,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:31:16,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:31:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:31:16,096 INFO L87 Difference]: Start difference. First operand 220 states and 313 transitions. Second operand 7 states. [2020-10-27 05:31:16,461 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 05:31:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:17,428 INFO L93 Difference]: Finished difference Result 661 states and 1007 transitions. [2020-10-27 05:31:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:31:17,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:31:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:17,433 INFO L225 Difference]: With dead ends: 661 [2020-10-27 05:31:17,434 INFO L226 Difference]: Without dead ends: 498 [2020-10-27 05:31:17,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:31:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-27 05:31:17,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 243. [2020-10-27 05:31:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-27 05:31:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 346 transitions. [2020-10-27 05:31:17,470 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 346 transitions. Word has length 94 [2020-10-27 05:31:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:17,471 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 346 transitions. [2020-10-27 05:31:17,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:31:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 346 transitions. [2020-10-27 05:31:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:17,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:17,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:17,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:31:17,473 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash -150412992, now seen corresponding path program 1 times [2020-10-27 05:31:17,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:17,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214855698] [2020-10-27 05:31:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:18,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:31:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:31:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:31:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:22,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:31:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:22,995 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:23,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:23,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:23,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:31:23,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:23,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:23,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214855698] [2020-10-27 05:31:23,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:23,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:31:23,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310290105] [2020-10-27 05:31:23,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:31:23,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:23,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:31:23,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:31:23,095 INFO L87 Difference]: Start difference. First operand 243 states and 346 transitions. Second operand 7 states. [2020-10-27 05:31:23,472 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:31:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:24,456 INFO L93 Difference]: Finished difference Result 657 states and 995 transitions. [2020-10-27 05:31:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:31:24,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:31:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:24,463 INFO L225 Difference]: With dead ends: 657 [2020-10-27 05:31:24,463 INFO L226 Difference]: Without dead ends: 494 [2020-10-27 05:31:24,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:31:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-27 05:31:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 259. [2020-10-27 05:31:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-27 05:31:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 368 transitions. [2020-10-27 05:31:24,509 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 368 transitions. Word has length 94 [2020-10-27 05:31:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:24,511 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 368 transitions. [2020-10-27 05:31:24,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:31:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 368 transitions. [2020-10-27 05:31:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:24,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:24,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:24,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:31:24,513 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash 648949178, now seen corresponding path program 1 times [2020-10-27 05:31:24,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:24,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320249711] [2020-10-27 05:31:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:29,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:29,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:31:29,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:31:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:31:29,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:31:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:31:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:30,105 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:30,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:30,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:30,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:30,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:30,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 05:31:30,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:30,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:30,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320249711] [2020-10-27 05:31:30,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:30,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:31:30,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057129505] [2020-10-27 05:31:30,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:31:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:30,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:31:30,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:31:30,268 INFO L87 Difference]: Start difference. First operand 259 states and 368 transitions. Second operand 7 states. [2020-10-27 05:31:30,713 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:31:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:31,709 INFO L93 Difference]: Finished difference Result 622 states and 938 transitions. [2020-10-27 05:31:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:31:31,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:31:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:31,715 INFO L225 Difference]: With dead ends: 622 [2020-10-27 05:31:31,715 INFO L226 Difference]: Without dead ends: 459 [2020-10-27 05:31:31,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:31:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-27 05:31:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 279. [2020-10-27 05:31:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-27 05:31:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 398 transitions. [2020-10-27 05:31:31,762 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 398 transitions. Word has length 94 [2020-10-27 05:31:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:31,763 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 398 transitions. [2020-10-27 05:31:31,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:31:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 398 transitions. [2020-10-27 05:31:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:31,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:31,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:31,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:31:31,764 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:31,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:31,766 INFO L82 PathProgramCache]: Analyzing trace with hash -797997528, now seen corresponding path program 1 times [2020-10-27 05:31:31,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:31,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210330790] [2020-10-27 05:31:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:36,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:36,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:31:36,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:31:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:31:36,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:31:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:31:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:37,259 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:37,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:37,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:31:37,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:37,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210330790] [2020-10-27 05:31:37,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:37,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:31:37,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394272393] [2020-10-27 05:31:37,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:31:37,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:31:37,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:31:37,374 INFO L87 Difference]: Start difference. First operand 279 states and 398 transitions. Second operand 7 states. [2020-10-27 05:31:37,756 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:31:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:38,915 INFO L93 Difference]: Finished difference Result 653 states and 983 transitions. [2020-10-27 05:31:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:31:38,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:31:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:38,919 INFO L225 Difference]: With dead ends: 653 [2020-10-27 05:31:38,919 INFO L226 Difference]: Without dead ends: 490 [2020-10-27 05:31:38,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:31:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-27 05:31:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 335. [2020-10-27 05:31:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-27 05:31:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 484 transitions. [2020-10-27 05:31:38,967 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 484 transitions. Word has length 94 [2020-10-27 05:31:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:38,967 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 484 transitions. [2020-10-27 05:31:38,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:31:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 484 transitions. [2020-10-27 05:31:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:38,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:38,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:38,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:31:38,969 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1027910146, now seen corresponding path program 1 times [2020-10-27 05:31:38,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:38,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774518903] [2020-10-27 05:31:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:31:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:31:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:31:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:31:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:31:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:44,394 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:44,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:44,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:44,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:31:44,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:44,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:31:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:31:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:44,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774518903] [2020-10-27 05:31:44,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:44,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:31:44,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335025796] [2020-10-27 05:31:44,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:31:44,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:31:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:31:44,455 INFO L87 Difference]: Start difference. First operand 335 states and 484 transitions. Second operand 4 states. [2020-10-27 05:31:44,838 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:31:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:45,525 INFO L93 Difference]: Finished difference Result 823 states and 1235 transitions. [2020-10-27 05:31:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:31:45,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-27 05:31:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:45,530 INFO L225 Difference]: With dead ends: 823 [2020-10-27 05:31:45,530 INFO L226 Difference]: Without dead ends: 552 [2020-10-27 05:31:45,532 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 [2020-10-27 05:31:45,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-27 05:31:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 547. [2020-10-27 05:31:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-27 05:31:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 808 transitions. [2020-10-27 05:31:45,625 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 808 transitions. Word has length 94 [2020-10-27 05:31:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:45,625 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 808 transitions. [2020-10-27 05:31:45,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:31:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 808 transitions. [2020-10-27 05:31:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:45,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:45,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:45,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:31:45,631 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:45,631 INFO L82 PathProgramCache]: Analyzing trace with hash -406380513, now seen corresponding path program 1 times [2020-10-27 05:31:45,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693174519] [2020-10-27 05:31:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:50,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:31:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:51,210 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:31:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:51,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:51,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:31:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:31:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:31:51,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:51,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693174519] [2020-10-27 05:31:51,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:51,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:31:51,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302138285] [2020-10-27 05:31:51,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:31:51,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:51,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:31:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:31:51,309 INFO L87 Difference]: Start difference. First operand 547 states and 808 transitions. Second operand 10 states. [2020-10-27 05:31:51,898 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:31:53,364 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:31:53,805 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:54,376 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:31:54,840 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:31:55,201 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:31:56,030 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 05:31:56,463 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:31:56,878 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:57,404 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:31:57,839 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:31:58,265 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:58,720 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:31:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:58,849 INFO L93 Difference]: Finished difference Result 2613 states and 4013 transitions. [2020-10-27 05:31:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:31:58,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-27 05:31:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:58,864 INFO L225 Difference]: With dead ends: 2613 [2020-10-27 05:31:58,864 INFO L226 Difference]: Without dead ends: 2303 [2020-10-27 05:31:58,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:31:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-27 05:31:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 547. [2020-10-27 05:31:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-27 05:31:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 806 transitions. [2020-10-27 05:31:58,980 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 806 transitions. Word has length 94 [2020-10-27 05:31:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:58,981 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 806 transitions. [2020-10-27 05:31:58,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:31:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 806 transitions. [2020-10-27 05:31:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:31:58,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:58,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:58,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:31:58,983 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1534099410, now seen corresponding path program 1 times [2020-10-27 05:31:58,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:58,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050706935] [2020-10-27 05:31:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:04,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:32:04,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:04,494 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:04,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050706935] [2020-10-27 05:32:04,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:04,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:32:04,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724112746] [2020-10-27 05:32:04,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:32:04,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:32:04,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:32:04,606 INFO L87 Difference]: Start difference. First operand 547 states and 806 transitions. Second operand 7 states. [2020-10-27 05:32:05,010 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:32:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:06,235 INFO L93 Difference]: Finished difference Result 1193 states and 1801 transitions. [2020-10-27 05:32:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:32:06,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:32:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:06,241 INFO L225 Difference]: With dead ends: 1193 [2020-10-27 05:32:06,241 INFO L226 Difference]: Without dead ends: 859 [2020-10-27 05:32:06,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:32:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-10-27 05:32:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 539. [2020-10-27 05:32:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-27 05:32:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 786 transitions. [2020-10-27 05:32:06,348 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 786 transitions. Word has length 94 [2020-10-27 05:32:06,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:06,348 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 786 transitions. [2020-10-27 05:32:06,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:32:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 786 transitions. [2020-10-27 05:32:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 05:32:06,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:06,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:06,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:32:06,350 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash -197500236, now seen corresponding path program 1 times [2020-10-27 05:32:06,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:06,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659213781] [2020-10-27 05:32:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:11,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:11,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:11,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 05:32:11,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:32:11,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:32:11,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:32:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:32:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:11,833 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:32:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:11,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659213781] [2020-10-27 05:32:11,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:11,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:32:11,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269247874] [2020-10-27 05:32:11,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:32:11,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:11,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:32:11,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:32:11,894 INFO L87 Difference]: Start difference. First operand 539 states and 786 transitions. Second operand 7 states. [2020-10-27 05:32:12,283 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:32:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:13,346 INFO L93 Difference]: Finished difference Result 1245 states and 1873 transitions. [2020-10-27 05:32:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:32:13,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-27 05:32:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:13,351 INFO L225 Difference]: With dead ends: 1245 [2020-10-27 05:32:13,352 INFO L226 Difference]: Without dead ends: 881 [2020-10-27 05:32:13,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:32:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-27 05:32:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 521. [2020-10-27 05:32:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-27 05:32:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 755 transitions. [2020-10-27 05:32:13,462 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 755 transitions. Word has length 94 [2020-10-27 05:32:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:13,462 INFO L481 AbstractCegarLoop]: Abstraction has 521 states and 755 transitions. [2020-10-27 05:32:13,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:32:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 755 transitions. [2020-10-27 05:32:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 05:32:13,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:13,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:13,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:32:13,464 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:13,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:13,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1637710614, now seen corresponding path program 1 times [2020-10-27 05:32:13,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:13,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023752478] [2020-10-27 05:32:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:18,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 05:32:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:18,865 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:18,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:18,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023752478] [2020-10-27 05:32:18,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:18,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:32:18,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053288066] [2020-10-27 05:32:18,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:32:18,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:18,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:32:18,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:32:18,914 INFO L87 Difference]: Start difference. First operand 521 states and 755 transitions. Second operand 7 states. [2020-10-27 05:32:19,296 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:32:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:20,329 INFO L93 Difference]: Finished difference Result 888 states and 1332 transitions. [2020-10-27 05:32:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:32:20,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-27 05:32:20,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:20,332 INFO L225 Difference]: With dead ends: 888 [2020-10-27 05:32:20,332 INFO L226 Difference]: Without dead ends: 677 [2020-10-27 05:32:20,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:32:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-10-27 05:32:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 473. [2020-10-27 05:32:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-27 05:32:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 687 transitions. [2020-10-27 05:32:20,428 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 687 transitions. Word has length 95 [2020-10-27 05:32:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:20,428 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 687 transitions. [2020-10-27 05:32:20,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:32:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 687 transitions. [2020-10-27 05:32:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 05:32:20,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:20,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:20,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:32:20,430 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1613571812, now seen corresponding path program 1 times [2020-10-27 05:32:20,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:20,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819604993] [2020-10-27 05:32:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:22,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:25,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:25,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 05:32:25,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:32:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:32:25,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:32:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:32:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:32:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:25,833 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:25,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:25,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819604993] [2020-10-27 05:32:25,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:25,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:25,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433338776] [2020-10-27 05:32:25,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:32:25,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:25,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:32:25,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:32:25,880 INFO L87 Difference]: Start difference. First operand 473 states and 687 transitions. Second operand 5 states. [2020-10-27 05:32:26,286 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:32:27,389 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:32:27,741 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:32:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:28,034 INFO L93 Difference]: Finished difference Result 801 states and 1196 transitions. [2020-10-27 05:32:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:32:28,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-27 05:32:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:28,038 INFO L225 Difference]: With dead ends: 801 [2020-10-27 05:32:28,038 INFO L226 Difference]: Without dead ends: 638 [2020-10-27 05:32:28,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:32:28,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-27 05:32:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 630. [2020-10-27 05:32:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-27 05:32:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 930 transitions. [2020-10-27 05:32:28,164 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 930 transitions. Word has length 95 [2020-10-27 05:32:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:28,165 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 930 transitions. [2020-10-27 05:32:28,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:32:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 930 transitions. [2020-10-27 05:32:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 05:32:28,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:28,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:28,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:32:28,167 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:28,167 INFO L82 PathProgramCache]: Analyzing trace with hash 227675017, now seen corresponding path program 1 times [2020-10-27 05:32:28,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:28,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662062399] [2020-10-27 05:32:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:32,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:32,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 05:32:32,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:32:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4461 [2020-10-27 05:32:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 05:32:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:32:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:33,009 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:33,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662062399] [2020-10-27 05:32:33,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:33,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:32:33,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949963911] [2020-10-27 05:32:33,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:32:33,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:33,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:32:33,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:32:33,044 INFO L87 Difference]: Start difference. First operand 630 states and 930 transitions. Second operand 4 states. [2020-10-27 05:32:33,437 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:32:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:34,460 INFO L93 Difference]: Finished difference Result 1590 states and 2406 transitions. [2020-10-27 05:32:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:32:34,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-27 05:32:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:34,465 INFO L225 Difference]: With dead ends: 1590 [2020-10-27 05:32:34,465 INFO L226 Difference]: Without dead ends: 1041 [2020-10-27 05:32:34,467 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 [2020-10-27 05:32:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-27 05:32:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1038. [2020-10-27 05:32:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-27 05:32:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1557 transitions. [2020-10-27 05:32:34,668 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1557 transitions. Word has length 95 [2020-10-27 05:32:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:34,669 INFO L481 AbstractCegarLoop]: Abstraction has 1038 states and 1557 transitions. [2020-10-27 05:32:34,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:32:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1557 transitions. [2020-10-27 05:32:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 05:32:34,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:34,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:34,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:32:34,670 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1633092963, now seen corresponding path program 1 times [2020-10-27 05:32:34,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:34,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885485573] [2020-10-27 05:32:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:34,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:34,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:39,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:32:39,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:40,061 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 05:32:40,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:40,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885485573] [2020-10-27 05:32:40,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:40,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:40,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025439444] [2020-10-27 05:32:40,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:32:40,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:40,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:32:40,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:32:40,155 INFO L87 Difference]: Start difference. First operand 1038 states and 1557 transitions. Second operand 6 states. [2020-10-27 05:32:40,541 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:32:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:41,293 INFO L93 Difference]: Finished difference Result 1999 states and 3029 transitions. [2020-10-27 05:32:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:32:41,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-27 05:32:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:41,298 INFO L225 Difference]: With dead ends: 1999 [2020-10-27 05:32:41,298 INFO L226 Difference]: Without dead ends: 1038 [2020-10-27 05:32:41,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:32:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-27 05:32:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2020-10-27 05:32:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-27 05:32:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1549 transitions. [2020-10-27 05:32:41,515 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1549 transitions. Word has length 96 [2020-10-27 05:32:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:41,515 INFO L481 AbstractCegarLoop]: Abstraction has 1038 states and 1549 transitions. [2020-10-27 05:32:41,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:32:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1549 transitions. [2020-10-27 05:32:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 05:32:41,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:41,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:41,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:32:41,517 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:41,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:41,517 INFO L82 PathProgramCache]: Analyzing trace with hash 164599112, now seen corresponding path program 1 times [2020-10-27 05:32:41,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:41,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796036584] [2020-10-27 05:32:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:42,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:44,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:44,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 05:32:44,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:32:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2540 [2020-10-27 05:32:44,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:44,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:44,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 05:32:44,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:32:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:44,439 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:44,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:44,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:44,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:44,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:44,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796036584] [2020-10-27 05:32:44,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:44,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:32:44,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232496482] [2020-10-27 05:32:44,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:32:44,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:44,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:32:44,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:32:44,470 INFO L87 Difference]: Start difference. First operand 1038 states and 1549 transitions. Second operand 4 states. [2020-10-27 05:32:44,834 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:32:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:45,850 INFO L93 Difference]: Finished difference Result 2766 states and 4191 transitions. [2020-10-27 05:32:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:32:45,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-27 05:32:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:45,859 INFO L225 Difference]: With dead ends: 2766 [2020-10-27 05:32:45,859 INFO L226 Difference]: Without dead ends: 1821 [2020-10-27 05:32:45,861 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 [2020-10-27 05:32:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-10-27 05:32:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1818. [2020-10-27 05:32:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1818 states. [2020-10-27 05:32:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2731 transitions. [2020-10-27 05:32:46,257 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2731 transitions. Word has length 96 [2020-10-27 05:32:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:46,257 INFO L481 AbstractCegarLoop]: Abstraction has 1818 states and 2731 transitions. [2020-10-27 05:32:46,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:32:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2731 transitions. [2020-10-27 05:32:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 05:32:46,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:46,259 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] [2020-10-27 05:32:46,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:32:46,259 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1203612846, now seen corresponding path program 1 times [2020-10-27 05:32:46,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:46,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101439247] [2020-10-27 05:32:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:47,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:47,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 05:32:47,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-10-27 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:48,037 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:48,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:48,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:48,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:48,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:32:48,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:48,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:48,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:48,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101439247] [2020-10-27 05:32:48,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:48,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:32:48,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483504655] [2020-10-27 05:32:48,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:32:48,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:48,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:32:48,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:32:48,078 INFO L87 Difference]: Start difference. First operand 1818 states and 2731 transitions. Second operand 4 states. [2020-10-27 05:32:48,444 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:32:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:49,742 INFO L93 Difference]: Finished difference Result 4998 states and 7563 transitions. [2020-10-27 05:32:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:32:49,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-27 05:32:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:49,756 INFO L225 Difference]: With dead ends: 4998 [2020-10-27 05:32:49,756 INFO L226 Difference]: Without dead ends: 3285 [2020-10-27 05:32:49,759 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 [2020-10-27 05:32:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2020-10-27 05:32:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3282. [2020-10-27 05:32:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3282 states. [2020-10-27 05:32:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4925 transitions. [2020-10-27 05:32:50,523 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4925 transitions. Word has length 97 [2020-10-27 05:32:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:50,523 INFO L481 AbstractCegarLoop]: Abstraction has 3282 states and 4925 transitions. [2020-10-27 05:32:50,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:32:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4925 transitions. [2020-10-27 05:32:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 05:32:50,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:50,525 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] [2020-10-27 05:32:50,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:32:50,525 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash 773186968, now seen corresponding path program 1 times [2020-10-27 05:32:50,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:50,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026376663] [2020-10-27 05:32:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:51,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2408 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:32:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:53,456 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:53,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:32:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:53,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026376663] [2020-10-27 05:32:53,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:53,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:32:53,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959758774] [2020-10-27 05:32:53,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:32:53,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:32:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:32:53,526 INFO L87 Difference]: Start difference. First operand 3282 states and 4925 transitions. Second operand 6 states. [2020-10-27 05:32:54,014 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:32:55,592 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-27 05:32:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:56,178 INFO L93 Difference]: Finished difference Result 9578 states and 14441 transitions. [2020-10-27 05:32:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:32:56,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-27 05:32:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:56,201 INFO L225 Difference]: With dead ends: 9578 [2020-10-27 05:32:56,201 INFO L226 Difference]: Without dead ends: 6397 [2020-10-27 05:32:56,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:32:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2020-10-27 05:32:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6394. [2020-10-27 05:32:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6394 states. [2020-10-27 05:32:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 9603 transitions. [2020-10-27 05:32:57,379 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 9603 transitions. Word has length 98 [2020-10-27 05:32:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:57,379 INFO L481 AbstractCegarLoop]: Abstraction has 6394 states and 9603 transitions. [2020-10-27 05:32:57,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:32:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 9603 transitions. [2020-10-27 05:32:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 05:32:57,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:57,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:57,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:32:57,381 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:57,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1663358339, now seen corresponding path program 1 times [2020-10-27 05:32:57,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:57,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583655335] [2020-10-27 05:32:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:32:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:58,607 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:32:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:58,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583655335] [2020-10-27 05:32:58,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:58,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:32:58,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832793275] [2020-10-27 05:32:58,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:32:58,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:58,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:32:58,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:32:58,645 INFO L87 Difference]: Start difference. First operand 6394 states and 9603 transitions. Second operand 4 states. [2020-10-27 05:32:59,057 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:33:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:01,956 INFO L93 Difference]: Finished difference Result 18150 states and 27253 transitions. [2020-10-27 05:33:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:33:01,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-27 05:33:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:01,993 INFO L225 Difference]: With dead ends: 18150 [2020-10-27 05:33:01,994 INFO L226 Difference]: Without dead ends: 11873 [2020-10-27 05:33:02,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:33:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11873 states. [2020-10-27 05:33:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11873 to 11870. [2020-10-27 05:33:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11870 states. [2020-10-27 05:33:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11870 states to 11870 states and 17685 transitions. [2020-10-27 05:33:04,259 INFO L78 Accepts]: Start accepts. Automaton has 11870 states and 17685 transitions. Word has length 98 [2020-10-27 05:33:04,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:04,259 INFO L481 AbstractCegarLoop]: Abstraction has 11870 states and 17685 transitions. [2020-10-27 05:33:04,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:33:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 11870 states and 17685 transitions. [2020-10-27 05:33:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 05:33:04,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:04,265 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] [2020-10-27 05:33:04,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 05:33:04,265 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:04,268 INFO L82 PathProgramCache]: Analyzing trace with hash -828678989, now seen corresponding path program 1 times [2020-10-27 05:33:04,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:04,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504604943] [2020-10-27 05:33:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 05:33:04,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 05:33:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:05,132 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:33:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:33:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:05,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504604943] [2020-10-27 05:33:05,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:05,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:33:05,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606510662] [2020-10-27 05:33:05,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:33:05,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:05,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:33:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:33:05,190 INFO L87 Difference]: Start difference. First operand 11870 states and 17685 transitions. Second operand 4 states. [2020-10-27 05:33:05,609 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:33:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:10,268 INFO L93 Difference]: Finished difference Result 33802 states and 50241 transitions. [2020-10-27 05:33:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:33:10,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-27 05:33:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:10,319 INFO L225 Difference]: With dead ends: 33802 [2020-10-27 05:33:10,319 INFO L226 Difference]: Without dead ends: 22061 [2020-10-27 05:33:10,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:33:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22061 states. [2020-10-27 05:33:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22061 to 22058. [2020-10-27 05:33:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22058 states. [2020-10-27 05:33:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22058 states to 22058 states and 32511 transitions. [2020-10-27 05:33:14,686 INFO L78 Accepts]: Start accepts. Automaton has 22058 states and 32511 transitions. Word has length 99 [2020-10-27 05:33:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:14,686 INFO L481 AbstractCegarLoop]: Abstraction has 22058 states and 32511 transitions. [2020-10-27 05:33:14,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:33:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 22058 states and 32511 transitions. [2020-10-27 05:33:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 05:33:14,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:14,687 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] [2020-10-27 05:33:14,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 05:33:14,687 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1420724379, now seen corresponding path program 1 times [2020-10-27 05:33:14,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:14,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40846853] [2020-10-27 05:33:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 05:33:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:33:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-27 05:33:15,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 05:33:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:16,047 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:33:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:16,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:16,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40846853] [2020-10-27 05:33:16,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:16,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:16,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511716537] [2020-10-27 05:33:16,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:16,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:16,113 INFO L87 Difference]: Start difference. First operand 22058 states and 32511 transitions. Second operand 6 states. [2020-10-27 05:33:16,584 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 05:33:19,561 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:33:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:25,970 INFO L93 Difference]: Finished difference Result 65722 states and 96847 transitions. [2020-10-27 05:33:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:25,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-27 05:33:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:26,074 INFO L225 Difference]: With dead ends: 65722 [2020-10-27 05:33:26,075 INFO L226 Difference]: Without dead ends: 43789 [2020-10-27 05:33:26,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:33:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43789 states. [2020-10-27 05:33:34,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43789 to 43786. [2020-10-27 05:33:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43786 states. [2020-10-27 05:33:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43786 states to 43786 states and 64285 transitions. [2020-10-27 05:33:34,717 INFO L78 Accepts]: Start accepts. Automaton has 43786 states and 64285 transitions. Word has length 100 [2020-10-27 05:33:34,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:34,717 INFO L481 AbstractCegarLoop]: Abstraction has 43786 states and 64285 transitions. [2020-10-27 05:33:34,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 43786 states and 64285 transitions. [2020-10-27 05:33:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 05:33:34,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:34,718 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] [2020-10-27 05:33:34,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 05:33:34,718 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:34,718 INFO L82 PathProgramCache]: Analyzing trace with hash -555191990, now seen corresponding path program 1 times [2020-10-27 05:33:34,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:34,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566314485] [2020-10-27 05:33:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:35,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:35,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:33:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:35,378 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:33:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:35,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:33:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:35,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566314485] [2020-10-27 05:33:35,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:35,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:33:35,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203016316] [2020-10-27 05:33:35,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:33:35,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:33:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:33:35,416 INFO L87 Difference]: Start difference. First operand 43786 states and 64285 transitions. Second operand 4 states. [2020-10-27 05:33:35,802 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 05:33:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:51,516 INFO L93 Difference]: Finished difference Result 124944 states and 182561 transitions. [2020-10-27 05:33:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:33:51,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-27 05:33:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:51,641 INFO L225 Difference]: With dead ends: 124944 [2020-10-27 05:33:51,642 INFO L226 Difference]: Without dead ends: 81291 [2020-10-27 05:33:51,707 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 [2020-10-27 05:33:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81291 states. [2020-10-27 05:34:07,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81291 to 81219. [2020-10-27 05:34:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81219 states. [2020-10-27 05:34:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81219 states to 81219 states and 117573 transitions. [2020-10-27 05:34:07,357 INFO L78 Accepts]: Start accepts. Automaton has 81219 states and 117573 transitions. Word has length 100 [2020-10-27 05:34:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:07,358 INFO L481 AbstractCegarLoop]: Abstraction has 81219 states and 117573 transitions. [2020-10-27 05:34:07,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:34:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 81219 states and 117573 transitions. [2020-10-27 05:34:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 05:34:07,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:07,366 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] [2020-10-27 05:34:07,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 05:34:07,366 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:07,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:07,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1531731129, now seen corresponding path program 1 times [2020-10-27 05:34:07,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:07,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821966008] [2020-10-27 05:34:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 05:34:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:08,223 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 05:34:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:34:08,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821966008] [2020-10-27 05:34:08,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:08,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:34:08,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782225076] [2020-10-27 05:34:08,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:34:08,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:34:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:34:08,279 INFO L87 Difference]: Start difference. First operand 81219 states and 117573 transitions. Second operand 6 states. [2020-10-27 05:34:08,704 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:34:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:24,691 INFO L93 Difference]: Finished difference Result 162374 states and 235079 transitions. [2020-10-27 05:34:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:34:24,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-27 05:34:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:24,821 INFO L225 Difference]: With dead ends: 162374 [2020-10-27 05:34:24,821 INFO L226 Difference]: Without dead ends: 81219 [2020-10-27 05:34:24,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:34:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81219 states.