/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_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:03:11,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:03:11,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:03:11,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:03:11,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:03:11,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:03:11,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:03:11,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:03:11,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:03:11,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:03:11,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:03:11,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:03:11,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:03:11,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:03:11,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:03:11,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:03:11,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:03:11,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:03:11,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:03:11,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:03:11,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:03:11,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:03:11,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:03:11,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:03:11,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:03:11,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:03:11,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:03:11,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:03:11,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:03:11,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:03:11,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:03:11,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:03:11,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:03:11,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:03:11,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:03:11,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:03:11,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:03:11,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:03:11,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:03:11,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:03:11,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:03:11,312 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 05:03:11,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:03:11,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:03:11,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:03:11,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:03:11,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:03:11,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:03:11,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:03:11,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:03:11,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:03:11,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:03:11,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:03:11,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:03:11,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:03:11,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:03:11,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:03:11,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:03:11,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:03:11,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:03:11,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:03:11,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:03:11,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:03:11,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:03:11,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:03:11,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:03:11,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:03:11,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:03:11,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:03:11,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:03:11,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:03:11,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:03:11,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:03:11,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:03:11,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:03:11,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:03:11,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:03:11,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:03:11,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd93eda14/a379e7e33a4d444bb12705deba39c253/FLAG1b319f447 [2020-10-27 05:03:12,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:03:12,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:03:12,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd93eda14/a379e7e33a4d444bb12705deba39c253/FLAG1b319f447 [2020-10-27 05:03:12,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd93eda14/a379e7e33a4d444bb12705deba39c253 [2020-10-27 05:03:12,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:03:12,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:03:12,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:03:12,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:03:12,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:03:12,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:03:12" (1/1) ... [2020-10-27 05:03:12,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6bd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:12, skipping insertion in model container [2020-10-27 05:03:12,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:03:12" (1/1) ... [2020-10-27 05:03:12,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:03:13,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:03:13,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:03:13,542 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:03:13,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:03:13,804 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:03:13,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13 WrapperNode [2020-10-27 05:03:13,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:03:13,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:03:13,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:03:13,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:03:13,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (1/1) ... [2020-10-27 05:03:13,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:03:13,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:03:13,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:03:13,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:03:13,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (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 05:03:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:03:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:03:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:03:14,032 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:03:14,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:03:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:03:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:03:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:03:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:03:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:03:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:03:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:03:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:03:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:03:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:03:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:03:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:03:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:03:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:03:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:03:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:03:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:03:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:03:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:03:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:03:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:03:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:03:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:03:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:03:15,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:03:15,364 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:03:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:03:15 BoogieIcfgContainer [2020-10-27 05:03:15,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:03:15,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:03:15,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:03:15,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:03:15,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:03:12" (1/3) ... [2020-10-27 05:03:15,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56316c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:03:15, skipping insertion in model container [2020-10-27 05:03:15,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:13" (2/3) ... [2020-10-27 05:03:15,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56316c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:03:15, skipping insertion in model container [2020-10-27 05:03:15,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:03:15" (3/3) ... [2020-10-27 05:03:15,376 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:03:15,389 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:03:15,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:03:15,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:03:15,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:03:15,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:03:15,441 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:03:15,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:03:15,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:03:15,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:03:15,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:03:15,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:03:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 05:03:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:03:15,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:15,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:15,487 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:15,494 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 05:03:15,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:15,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478828882] [2020-10-27 05:03:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:16,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:21,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:21,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:03:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:03:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 05:03:21,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:03:21,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 05:03:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 05:03:21,847 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:21,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:03:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:21,975 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 05:03:21,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478828882] [2020-10-27 05:03:21,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:21,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:03:21,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438274463] [2020-10-27 05:03:21,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:03:21,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:22,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:03:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:03:22,022 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-27 05:03:22,755 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:03:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:25,277 INFO L93 Difference]: Finished difference Result 602 states and 1036 transitions. [2020-10-27 05:03:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:03:25,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-27 05:03:25,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:25,313 INFO L225 Difference]: With dead ends: 602 [2020-10-27 05:03:25,313 INFO L226 Difference]: Without dead ends: 452 [2020-10-27 05:03:25,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-27 05:03:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2020-10-27 05:03:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-27 05:03:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 739 transitions. [2020-10-27 05:03:25,424 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 739 transitions. Word has length 115 [2020-10-27 05:03:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:25,426 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 739 transitions. [2020-10-27 05:03:25,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:03:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 739 transitions. [2020-10-27 05:03:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:03:25,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:25,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:25,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:03:25,441 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:25,442 INFO L82 PathProgramCache]: Analyzing trace with hash 148684735, now seen corresponding path program 1 times [2020-10-27 05:03:25,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:25,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431440033] [2020-10-27 05:03:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:25,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:25,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:25,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:30,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:03:30,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:03:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:03:30,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:30,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:03:30,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 05:03:31,269 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:31,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:31,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:03:31,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:31,376 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 05:03:31,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431440033] [2020-10-27 05:03:31,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:31,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:31,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616252182] [2020-10-27 05:03:31,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:31,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:31,391 INFO L87 Difference]: Start difference. First operand 448 states and 739 transitions. Second operand 5 states. [2020-10-27 05:03:34,804 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:03:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:34,937 INFO L93 Difference]: Finished difference Result 1301 states and 2148 transitions. [2020-10-27 05:03:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:34,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 05:03:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:34,949 INFO L225 Difference]: With dead ends: 1301 [2020-10-27 05:03:34,949 INFO L226 Difference]: Without dead ends: 870 [2020-10-27 05:03:34,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-27 05:03:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 867. [2020-10-27 05:03:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-27 05:03:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1424 transitions. [2020-10-27 05:03:35,072 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1424 transitions. Word has length 118 [2020-10-27 05:03:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1424 transitions. [2020-10-27 05:03:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1424 transitions. [2020-10-27 05:03:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:03:35,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:35,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:35,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:03:35,083 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:35,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1936006675, now seen corresponding path program 1 times [2020-10-27 05:03:35,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:35,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863347278] [2020-10-27 05:03:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:40,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:03:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:41,018 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:41,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:41,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:41,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:41,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:03:41,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:41,205 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 05:03:41,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863347278] [2020-10-27 05:03:41,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:41,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:41,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20624599] [2020-10-27 05:03:41,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:41,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:41,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:41,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:41,212 INFO L87 Difference]: Start difference. First operand 867 states and 1424 transitions. Second operand 5 states. [2020-10-27 05:03:44,482 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:03:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:44,628 INFO L93 Difference]: Finished difference Result 2478 states and 4064 transitions. [2020-10-27 05:03:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:44,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:03:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:44,640 INFO L225 Difference]: With dead ends: 2478 [2020-10-27 05:03:44,640 INFO L226 Difference]: Without dead ends: 1697 [2020-10-27 05:03:44,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-27 05:03:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1694. [2020-10-27 05:03:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-10-27 05:03:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2771 transitions. [2020-10-27 05:03:44,774 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2771 transitions. Word has length 120 [2020-10-27 05:03:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:44,775 INFO L481 AbstractCegarLoop]: Abstraction has 1694 states and 2771 transitions. [2020-10-27 05:03:44,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2771 transitions. [2020-10-27 05:03:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:03:44,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:44,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:44,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:03:44,782 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:44,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1681496823, now seen corresponding path program 1 times [2020-10-27 05:03:44,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:44,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984275365] [2020-10-27 05:03:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:03:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:50,610 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:50,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:03:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:50,701 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 05:03:50,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984275365] [2020-10-27 05:03:50,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:50,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:50,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417367109] [2020-10-27 05:03:50,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:50,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:50,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:50,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:50,706 INFO L87 Difference]: Start difference. First operand 1694 states and 2771 transitions. Second operand 5 states. [2020-10-27 05:03:53,619 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:03:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:53,760 INFO L93 Difference]: Finished difference Result 4884 states and 7981 transitions. [2020-10-27 05:03:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:53,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:03:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:53,780 INFO L225 Difference]: With dead ends: 4884 [2020-10-27 05:03:53,780 INFO L226 Difference]: Without dead ends: 3273 [2020-10-27 05:03:53,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-27 05:03:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3270. [2020-10-27 05:03:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2020-10-27 05:03:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5313 transitions. [2020-10-27 05:03:53,993 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5313 transitions. Word has length 120 [2020-10-27 05:03:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:53,993 INFO L481 AbstractCegarLoop]: Abstraction has 3270 states and 5313 transitions. [2020-10-27 05:03:53,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5313 transitions. [2020-10-27 05:03:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:03:54,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:54,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:54,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:03:54,002 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1962548538, now seen corresponding path program 1 times [2020-10-27 05:03:54,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:54,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915088242] [2020-10-27 05:03:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:55,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:59,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:03:59,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:03:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 05:03:59,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:03:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:03:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:03:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:59,775 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:59,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:03:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:03:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:59,892 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 05:03:59,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915088242] [2020-10-27 05:03:59,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:59,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:03:59,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477321869] [2020-10-27 05:03:59,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:03:59,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:59,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:03:59,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:03:59,899 INFO L87 Difference]: Start difference. First operand 3270 states and 5313 transitions. Second operand 8 states. [2020-10-27 05:04:00,605 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:04:03,815 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:04:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:04,318 INFO L93 Difference]: Finished difference Result 7548 states and 12409 transitions. [2020-10-27 05:04:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:04:04,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-27 05:04:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:04,348 INFO L225 Difference]: With dead ends: 7548 [2020-10-27 05:04:04,349 INFO L226 Difference]: Without dead ends: 5645 [2020-10-27 05:04:04,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:04:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2020-10-27 05:04:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 3306. [2020-10-27 05:04:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2020-10-27 05:04:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 5329 transitions. [2020-10-27 05:04:04,657 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 5329 transitions. Word has length 121 [2020-10-27 05:04:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:04,658 INFO L481 AbstractCegarLoop]: Abstraction has 3306 states and 5329 transitions. [2020-10-27 05:04:04,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:04:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 5329 transitions. [2020-10-27 05:04:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:04:04,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:04,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:04,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:04:04,672 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:04,672 INFO L82 PathProgramCache]: Analyzing trace with hash 803516799, now seen corresponding path program 1 times [2020-10-27 05:04:04,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:04,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181213373] [2020-10-27 05:04:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:04,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:09,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:09,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:04:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:04:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:04:09,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:04:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:10,390 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:04:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:10,486 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 05:04:10,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181213373] [2020-10-27 05:04:10,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:10,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:10,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636630923] [2020-10-27 05:04:10,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:10,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:10,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:10,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:10,490 INFO L87 Difference]: Start difference. First operand 3306 states and 5329 transitions. Second operand 5 states. [2020-10-27 05:04:13,585 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:04:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:13,773 INFO L93 Difference]: Finished difference Result 9536 states and 15351 transitions. [2020-10-27 05:04:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:13,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:04:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:13,806 INFO L225 Difference]: With dead ends: 9536 [2020-10-27 05:04:13,806 INFO L226 Difference]: Without dead ends: 6397 [2020-10-27 05:04:13,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2020-10-27 05:04:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6394. [2020-10-27 05:04:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6394 states. [2020-10-27 05:04:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 10227 transitions. [2020-10-27 05:04:14,428 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 10227 transitions. Word has length 121 [2020-10-27 05:04:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:14,428 INFO L481 AbstractCegarLoop]: Abstraction has 6394 states and 10227 transitions. [2020-10-27 05:04:14,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 10227 transitions. [2020-10-27 05:04:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:04:14,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:14,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:14,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:04:14,444 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:14,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:14,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1237686682, now seen corresponding path program 1 times [2020-10-27 05:04:14,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:14,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406376092] [2020-10-27 05:04:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:14,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:19,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:19,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:04:19,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:04:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:04:19,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:04:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:20,208 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:20,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:20,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:20,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:04:20,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:20,301 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 05:04:20,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406376092] [2020-10-27 05:04:20,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:20,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:20,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633659406] [2020-10-27 05:04:20,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:20,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:20,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:20,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:20,304 INFO L87 Difference]: Start difference. First operand 6394 states and 10227 transitions. Second operand 5 states. [2020-10-27 05:04:24,045 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:04:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:24,418 INFO L93 Difference]: Finished difference Result 18585 states and 29707 transitions. [2020-10-27 05:04:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:24,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:04:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:24,466 INFO L225 Difference]: With dead ends: 18585 [2020-10-27 05:04:24,466 INFO L226 Difference]: Without dead ends: 12598 [2020-10-27 05:04:24,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12598 states. [2020-10-27 05:04:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12598 to 12595. [2020-10-27 05:04:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12595 states. [2020-10-27 05:04:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12595 states to 12595 states and 20055 transitions. [2020-10-27 05:04:25,688 INFO L78 Accepts]: Start accepts. Automaton has 12595 states and 20055 transitions. Word has length 122 [2020-10-27 05:04:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:25,689 INFO L481 AbstractCegarLoop]: Abstraction has 12595 states and 20055 transitions. [2020-10-27 05:04:25,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 12595 states and 20055 transitions. [2020-10-27 05:04:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:04:25,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:25,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:25,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:04:25,716 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:25,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1843922724, now seen corresponding path program 1 times [2020-10-27 05:04:25,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:25,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842705003] [2020-10-27 05:04:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:30,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:30,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:04:30,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:04:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:04:30,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:30,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:30,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:30,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:04:30,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:31,505 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:31,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:31,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:31,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:31,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:31,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:04:31,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:31,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:31,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:31,595 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 05:04:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842705003] [2020-10-27 05:04:31,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:31,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:31,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950187851] [2020-10-27 05:04:31,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:31,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:31,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:31,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:31,598 INFO L87 Difference]: Start difference. First operand 12595 states and 20055 transitions. Second operand 5 states. [2020-10-27 05:04:36,349 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:04:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:37,074 INFO L93 Difference]: Finished difference Result 36529 states and 58155 transitions. [2020-10-27 05:04:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:37,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:04:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:37,141 INFO L225 Difference]: With dead ends: 36529 [2020-10-27 05:04:37,141 INFO L226 Difference]: Without dead ends: 24526 [2020-10-27 05:04:37,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24526 states. [2020-10-27 05:04:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24526 to 24523. [2020-10-27 05:04:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24523 states. [2020-10-27 05:04:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24523 states to 24523 states and 38887 transitions. [2020-10-27 05:04:39,410 INFO L78 Accepts]: Start accepts. Automaton has 24523 states and 38887 transitions. Word has length 122 [2020-10-27 05:04:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:39,411 INFO L481 AbstractCegarLoop]: Abstraction has 24523 states and 38887 transitions. [2020-10-27 05:04:39,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 24523 states and 38887 transitions. [2020-10-27 05:04:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:04:39,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:39,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:39,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:04:39,446 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1595896889, now seen corresponding path program 1 times [2020-10-27 05:04:39,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:39,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597422641] [2020-10-27 05:04:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:44,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:44,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:04:44,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:04:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:04:44,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:04:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:04:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:04:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:45,180 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:45,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:04:45,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:04:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:04:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:45,268 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 05:04:45,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597422641] [2020-10-27 05:04:45,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:45,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:04:45,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587392594] [2020-10-27 05:04:45,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:04:45,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:45,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:04:45,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:04:45,270 INFO L87 Difference]: Start difference. First operand 24523 states and 38887 transitions. Second operand 8 states. [2020-10-27 05:04:45,990 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:04:50,278 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:04:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:53,269 INFO L93 Difference]: Finished difference Result 46009 states and 74091 transitions. [2020-10-27 05:04:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:04:53,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-27 05:04:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:53,362 INFO L225 Difference]: With dead ends: 46009 [2020-10-27 05:04:53,363 INFO L226 Difference]: Without dead ends: 42182 [2020-10-27 05:04:53,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:04:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42182 states. [2020-10-27 05:04:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42182 to 24715. [2020-10-27 05:04:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24715 states. [2020-10-27 05:04:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24715 states to 24715 states and 39175 transitions. [2020-10-27 05:04:56,272 INFO L78 Accepts]: Start accepts. Automaton has 24715 states and 39175 transitions. Word has length 123 [2020-10-27 05:04:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:56,272 INFO L481 AbstractCegarLoop]: Abstraction has 24715 states and 39175 transitions. [2020-10-27 05:04:56,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:04:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24715 states and 39175 transitions. [2020-10-27 05:04:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:04:56,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:56,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:56,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:04:56,300 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:56,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720712, now seen corresponding path program 1 times [2020-10-27 05:04:56,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:56,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116226168] [2020-10-27 05:04:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:00,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:00,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:05:00,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:05:00,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4322 [2020-10-27 05:05:00,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:05:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:05:00,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:05:00,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:01,329 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:01,445 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 05:05:01,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116226168] [2020-10-27 05:05:01,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:01,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:05:01,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155143124] [2020-10-27 05:05:01,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:05:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:01,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:05:01,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:05:01,447 INFO L87 Difference]: Start difference. First operand 24715 states and 39175 transitions. Second operand 4 states. [2020-10-27 05:05:02,135 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:05:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:07,698 INFO L93 Difference]: Finished difference Result 52241 states and 83979 transitions. [2020-10-27 05:05:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:05:07,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 05:05:07,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:07,762 INFO L225 Difference]: With dead ends: 52241 [2020-10-27 05:05:07,762 INFO L226 Difference]: Without dead ends: 37934 [2020-10-27 05:05:07,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37934 states. [2020-10-27 05:05:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37934 to 37803. [2020-10-27 05:05:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37803 states. [2020-10-27 05:05:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37803 states to 37803 states and 60199 transitions. [2020-10-27 05:05:11,834 INFO L78 Accepts]: Start accepts. Automaton has 37803 states and 60199 transitions. Word has length 123 [2020-10-27 05:05:11,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:11,835 INFO L481 AbstractCegarLoop]: Abstraction has 37803 states and 60199 transitions. [2020-10-27 05:05:11,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:05:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 37803 states and 60199 transitions. [2020-10-27 05:05:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:05:11,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:11,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:11,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:05:11,863 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:11,864 INFO L82 PathProgramCache]: Analyzing trace with hash -2074117376, now seen corresponding path program 1 times [2020-10-27 05:05:11,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:11,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293751595] [2020-10-27 05:05:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:11,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:16,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:05:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:05:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 05:05:16,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:05:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:17,578 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:17,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:17,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:17,663 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 05:05:17,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293751595] [2020-10-27 05:05:17,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:17,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:17,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347257461] [2020-10-27 05:05:17,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:17,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:17,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:17,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:17,666 INFO L87 Difference]: Start difference. First operand 37803 states and 60199 transitions. Second operand 5 states. [2020-10-27 05:05:24,269 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:28,697 INFO L93 Difference]: Finished difference Result 109344 states and 173863 transitions. [2020-10-27 05:05:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:28,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 05:05:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:29,008 INFO L225 Difference]: With dead ends: 109344 [2020-10-27 05:05:29,008 INFO L226 Difference]: Without dead ends: 74045 [2020-10-27 05:05:29,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74045 states. [2020-10-27 05:05:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74045 to 74042. [2020-10-27 05:05:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74042 states. [2020-10-27 05:05:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74042 states to 74042 states and 117187 transitions. [2020-10-27 05:05:37,569 INFO L78 Accepts]: Start accepts. Automaton has 74042 states and 117187 transitions. Word has length 127 [2020-10-27 05:05:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:37,570 INFO L481 AbstractCegarLoop]: Abstraction has 74042 states and 117187 transitions. [2020-10-27 05:05:37,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 74042 states and 117187 transitions. [2020-10-27 05:05:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:05:37,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:37,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:37,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:05:37,622 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:37,623 INFO L82 PathProgramCache]: Analyzing trace with hash -334766762, now seen corresponding path program 1 times [2020-10-27 05:05:37,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:37,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732523947] [2020-10-27 05:05:37,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:38,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:42,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:05:42,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:05:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:05:42,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:05:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:43,373 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:05:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:43,441 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 05:05:43,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732523947] [2020-10-27 05:05:43,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:43,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:43,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082184466] [2020-10-27 05:05:43,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:43,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:43,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:43,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:43,444 INFO L87 Difference]: Start difference. First operand 74042 states and 117187 transitions. Second operand 5 states. [2020-10-27 05:05:52,919 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:06:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:02,781 INFO L93 Difference]: Finished difference Result 215388 states and 340525 transitions. [2020-10-27 05:06:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:02,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 05:06:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:03,178 INFO L225 Difference]: With dead ends: 215388 [2020-10-27 05:06:03,179 INFO L226 Difference]: Without dead ends: 143913 [2020-10-27 05:06:03,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143913 states. [2020-10-27 05:06:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143913 to 143910. [2020-10-27 05:06:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143910 states. [2020-10-27 05:06:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143910 states to 143910 states and 226137 transitions. [2020-10-27 05:06:20,320 INFO L78 Accepts]: Start accepts. Automaton has 143910 states and 226137 transitions. Word has length 129 [2020-10-27 05:06:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:20,320 INFO L481 AbstractCegarLoop]: Abstraction has 143910 states and 226137 transitions. [2020-10-27 05:06:20,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 143910 states and 226137 transitions. [2020-10-27 05:06:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:06:20,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:20,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:20,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:06:20,453 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash -941720114, now seen corresponding path program 1 times [2020-10-27 05:06:20,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:20,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883454182] [2020-10-27 05:06:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:25,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:25,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:06:25,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:06:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:06:25,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:06:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:26,163 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:06:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:06:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:26,224 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 05:06:26,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883454182] [2020-10-27 05:06:26,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:26,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:26,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592604413] [2020-10-27 05:06:26,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:26,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:26,227 INFO L87 Difference]: Start difference. First operand 143910 states and 226137 transitions. Second operand 5 states. [2020-10-27 05:06:40,839 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 283