/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:07:07,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:07:07,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:07:07,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:07:07,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:07:07,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:07:07,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:07:07,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:07:07,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:07:07,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:07:07,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:07:07,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:07:07,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:07:07,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:07:07,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:07:07,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:07:07,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:07:07,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:07:07,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:07:07,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:07:07,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:07:07,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:07:07,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:07:07,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:07:07,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:07:07,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:07:07,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:07:07,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:07:07,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:07:07,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:07:07,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:07:07,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:07:07,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:07:07,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:07:07,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:07:07,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:07:07,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:07:07,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:07:07,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:07:07,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:07:07,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:07:07,948 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 [2020-10-29 13:07:07,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:07:07,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:07:08,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:07:08,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:07:08,004 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:07:08,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:07:08,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:07:08,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:07:08,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:07:08,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:07:08,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:07:08,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:07:08,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:07:08,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:07:08,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:07:08,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:07:08,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:07:08,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:07:08,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:07:08,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:07:08,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:07:08,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:07:08,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:07:08,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:07:08,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:07:08,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:07:08,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:07:08,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:07:08,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:07:08,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:07:08,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:07:08,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:07:08,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:07:08,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:07:08,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:07:08,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:07:08,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fcc870df/4f4c43b325af4563920b7f3173a231f8/FLAGc9f346381 [2020-10-29 13:07:09,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:07:09,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:07:09,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fcc870df/4f4c43b325af4563920b7f3173a231f8/FLAGc9f346381 [2020-10-29 13:07:09,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fcc870df/4f4c43b325af4563920b7f3173a231f8 [2020-10-29 13:07:09,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:07:09,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:07:09,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:07:09,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:07:09,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:07:09,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:07:09" (1/1) ... [2020-10-29 13:07:09,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d402c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:09, skipping insertion in model container [2020-10-29 13:07:09,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:07:09" (1/1) ... [2020-10-29 13:07:09,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:07:09,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:07:10,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:07:10,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:07:10,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:07:10,343 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:07:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10 WrapperNode [2020-10-29 13:07:10,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:07:10,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:07:10,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:07:10,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:07:10,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (1/1) ... [2020-10-29 13:07:10,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:07:10,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:07:10,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:07:10,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:07:10,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (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 [2020-10-29 13:07:10,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:07:10,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:07:10,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:07:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:07:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:07:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:07:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:07:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:07:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:07:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:07:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:07:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:07:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:07:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:07:10,550 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:07:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:07:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:07:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:07:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:07:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:07:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:07:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:07:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:07:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:07:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:07:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:07:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:07:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:07:10,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:07:12,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:07:12,272 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:07:12,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:12 BoogieIcfgContainer [2020-10-29 13:07:12,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:07:12,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:07:12,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:07:12,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:07:12,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:07:09" (1/3) ... [2020-10-29 13:07:12,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765a5144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:12, skipping insertion in model container [2020-10-29 13:07:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:07:10" (2/3) ... [2020-10-29 13:07:12,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765a5144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:07:12, skipping insertion in model container [2020-10-29 13:07:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:07:12" (3/3) ... [2020-10-29 13:07:12,284 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:07:12,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:07:12,302 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:07:12,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:07:12,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:07:12,349 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:07:12,349 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:07:12,349 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:07:12,349 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:07:12,350 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:07:12,350 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:07:12,350 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:07:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-29 13:07:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:07:12,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:12,397 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] [2020-10-29 13:07:12,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:12,404 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-29 13:07:12,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:12,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347944908] [2020-10-29 13:07:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:17,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:17,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:07:17,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:07:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:07:17,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:17,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:07:17,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 13:07:17,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 13:07:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:07:18,694 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:07:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:18,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:18,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:07:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:18,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:18,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347944908] [2020-10-29 13:07:18,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:18,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:07:18,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112618648] [2020-10-29 13:07:18,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:07:18,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:07:18,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:07:18,852 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-29 13:07:19,804 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-29 13:07:22,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:22,435 INFO L93 Difference]: Finished difference Result 604 states and 1040 transitions. [2020-10-29 13:07:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:07:22,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-29 13:07:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:22,476 INFO L225 Difference]: With dead ends: 604 [2020-10-29 13:07:22,476 INFO L226 Difference]: Without dead ends: 454 [2020-10-29 13:07:22,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-29 13:07:22,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2020-10-29 13:07:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-29 13:07:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 747 transitions. [2020-10-29 13:07:22,611 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 747 transitions. Word has length 115 [2020-10-29 13:07:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:22,612 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 747 transitions. [2020-10-29 13:07:22,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:07:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 747 transitions. [2020-10-29 13:07:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 13:07:22,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:22,620 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] [2020-10-29 13:07:22,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:07:22,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1374446911, now seen corresponding path program 1 times [2020-10-29 13:07:22,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:22,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225596953] [2020-10-29 13:07:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:27,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:27,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 13:07:27,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:07:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 13:07:27,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:27,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:27,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 13:07:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 13:07:28,496 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:07:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:28,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:07:28,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:28,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:28,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225596953] [2020-10-29 13:07:28,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:28,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:28,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123652611] [2020-10-29 13:07:28,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:28,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:28,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:28,668 INFO L87 Difference]: Start difference. First operand 450 states and 747 transitions. Second operand 5 states. [2020-10-29 13:07:31,800 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:07:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:31,978 INFO L93 Difference]: Finished difference Result 1262 states and 2090 transitions. [2020-10-29 13:07:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:31,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-29 13:07:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:31,987 INFO L225 Difference]: With dead ends: 1262 [2020-10-29 13:07:31,988 INFO L226 Difference]: Without dead ends: 855 [2020-10-29 13:07:31,995 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 [2020-10-29 13:07:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-29 13:07:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 852. [2020-10-29 13:07:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-10-29 13:07:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1405 transitions. [2020-10-29 13:07:32,085 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1405 transitions. Word has length 118 [2020-10-29 13:07:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:32,088 INFO L481 AbstractCegarLoop]: Abstraction has 852 states and 1405 transitions. [2020-10-29 13:07:32,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1405 transitions. [2020-10-29 13:07:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:07:32,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:32,102 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] [2020-10-29 13:07:32,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:07:32,102 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:32,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1788867487, now seen corresponding path program 1 times [2020-10-29 13:07:32,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:32,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227536057] [2020-10-29 13:07:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:32,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:37,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:37,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:07:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:07:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 13:07:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:07:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:38,094 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:07:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 13:07:38,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:38,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:07:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:38,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227536057] [2020-10-29 13:07:38,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:38,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:38,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937327005] [2020-10-29 13:07:38,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:38,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:38,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:38,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:38,250 INFO L87 Difference]: Start difference. First operand 852 states and 1405 transitions. Second operand 5 states. [2020-10-29 13:07:41,725 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:07:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:41,895 INFO L93 Difference]: Finished difference Result 2415 states and 3974 transitions. [2020-10-29 13:07:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:41,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-29 13:07:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:41,911 INFO L225 Difference]: With dead ends: 2415 [2020-10-29 13:07:41,912 INFO L226 Difference]: Without dead ends: 1670 [2020-10-29 13:07:41,914 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 [2020-10-29 13:07:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2020-10-29 13:07:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1667. [2020-10-29 13:07:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2020-10-29 13:07:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2740 transitions. [2020-10-29 13:07:42,056 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2740 transitions. Word has length 120 [2020-10-29 13:07:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:42,056 INFO L481 AbstractCegarLoop]: Abstraction has 1667 states and 2740 transitions. [2020-10-29 13:07:42,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2740 transitions. [2020-10-29 13:07:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:07:42,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:42,061 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] [2020-10-29 13:07:42,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:07:42,062 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:42,063 INFO L82 PathProgramCache]: Analyzing trace with hash -281814929, now seen corresponding path program 1 times [2020-10-29 13:07:42,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:42,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042177536] [2020-10-29 13:07:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:42,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:47,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:47,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:07:47,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:07:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:07:47,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:47,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:47,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 13:07:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:47,871 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:07:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:47,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:47,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:47,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:47,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:07:47,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:47,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:47,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:47,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042177536] [2020-10-29 13:07:47,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:47,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:47,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109475216] [2020-10-29 13:07:47,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:47,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:47,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:47,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:47,967 INFO L87 Difference]: Start difference. First operand 1667 states and 2740 transitions. Second operand 5 states. [2020-10-29 13:07:51,089 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:07:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:07:51,277 INFO L93 Difference]: Finished difference Result 4686 states and 7676 transitions. [2020-10-29 13:07:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:07:51,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-29 13:07:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:07:51,296 INFO L225 Difference]: With dead ends: 4686 [2020-10-29 13:07:51,296 INFO L226 Difference]: Without dead ends: 3243 [2020-10-29 13:07:51,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:07:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-10-29 13:07:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3240. [2020-10-29 13:07:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3240 states. [2020-10-29 13:07:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5304 transitions. [2020-10-29 13:07:51,604 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5304 transitions. Word has length 120 [2020-10-29 13:07:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:07:51,605 INFO L481 AbstractCegarLoop]: Abstraction has 3240 states and 5304 transitions. [2020-10-29 13:07:51,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:07:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5304 transitions. [2020-10-29 13:07:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:07:51,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:07:51,612 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] [2020-10-29 13:07:51,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:07:51,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:07:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:07:51,613 INFO L82 PathProgramCache]: Analyzing trace with hash -356586264, now seen corresponding path program 1 times [2020-10-29 13:07:51,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:07:51,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827817389] [2020-10-29 13:07:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:07:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:52,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:56,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:56,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:07:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:07:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 13:07:56,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:56,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:07:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:07:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 13:07:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:57,462 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:07:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:07:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:07:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:07:57,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:07:57,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:07:57,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:07:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:07:57,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:07:57,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:07:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:07:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:07:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:07:57,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:07:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:07:57,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827817389] [2020-10-29 13:07:57,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:07:57,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:07:57,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678364039] [2020-10-29 13:07:57,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:07:57,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:07:57,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:07:57,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:07:57,544 INFO L87 Difference]: Start difference. First operand 3240 states and 5304 transitions. Second operand 5 states. [2020-10-29 13:08:00,893 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:08:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:01,131 INFO L93 Difference]: Finished difference Result 9454 states and 15458 transitions. [2020-10-29 13:08:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:01,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 13:08:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:01,165 INFO L225 Difference]: With dead ends: 9454 [2020-10-29 13:08:01,165 INFO L226 Difference]: Without dead ends: 6319 [2020-10-29 13:08:01,174 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 [2020-10-29 13:08:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2020-10-29 13:08:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 6316. [2020-10-29 13:08:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6316 states. [2020-10-29 13:08:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6316 states to 6316 states and 10270 transitions. [2020-10-29 13:08:01,673 INFO L78 Accepts]: Start accepts. Automaton has 6316 states and 10270 transitions. Word has length 121 [2020-10-29 13:08:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:01,673 INFO L481 AbstractCegarLoop]: Abstraction has 6316 states and 10270 transitions. [2020-10-29 13:08:01,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6316 states and 10270 transitions. [2020-10-29 13:08:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:08:01,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:01,690 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] [2020-10-29 13:08:01,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:08:01,690 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:01,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168522, now seen corresponding path program 1 times [2020-10-29 13:08:01,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:01,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029268339] [2020-10-29 13:08:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:06,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:06,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:08:06,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:08:06,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:08:06,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:06,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:08:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:07,414 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:08:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:07,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:07,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:07,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:08:07,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:07,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:07,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:07,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029268339] [2020-10-29 13:08:07,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:07,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:07,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318437128] [2020-10-29 13:08:07,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:07,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:07,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:07,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:07,499 INFO L87 Difference]: Start difference. First operand 6316 states and 10270 transitions. Second operand 5 states. [2020-10-29 13:08:10,629 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:08:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:10,935 INFO L93 Difference]: Finished difference Result 18386 states and 29834 transitions. [2020-10-29 13:08:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:10,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 13:08:10,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:11,001 INFO L225 Difference]: With dead ends: 18386 [2020-10-29 13:08:11,002 INFO L226 Difference]: Without dead ends: 12341 [2020-10-29 13:08:11,018 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 [2020-10-29 13:08:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12341 states. [2020-10-29 13:08:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12341 to 12338. [2020-10-29 13:08:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12338 states. [2020-10-29 13:08:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12338 states to 12338 states and 19898 transitions. [2020-10-29 13:08:12,030 INFO L78 Accepts]: Start accepts. Automaton has 12338 states and 19898 transitions. Word has length 122 [2020-10-29 13:08:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:12,030 INFO L481 AbstractCegarLoop]: Abstraction has 12338 states and 19898 transitions. [2020-10-29 13:08:12,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 12338 states and 19898 transitions. [2020-10-29 13:08:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:08:12,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:12,052 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] [2020-10-29 13:08:12,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:08:12,053 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:12,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:12,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1642350452, now seen corresponding path program 1 times [2020-10-29 13:08:12,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:12,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617057445] [2020-10-29 13:08:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:08:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:08:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:08:17,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:17,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:08:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:17,821 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:08:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:17,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:08:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:17,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:17,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617057445] [2020-10-29 13:08:17,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:17,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:17,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165807262] [2020-10-29 13:08:17,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:17,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:17,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:17,900 INFO L87 Difference]: Start difference. First operand 12338 states and 19898 transitions. Second operand 5 states. [2020-10-29 13:08:21,454 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:08:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:22,084 INFO L93 Difference]: Finished difference Result 36246 states and 58428 transitions. [2020-10-29 13:08:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:08:22,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 13:08:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:22,146 INFO L225 Difference]: With dead ends: 36246 [2020-10-29 13:08:22,146 INFO L226 Difference]: Without dead ends: 23923 [2020-10-29 13:08:22,175 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 [2020-10-29 13:08:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23923 states. [2020-10-29 13:08:23,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23923 to 23920. [2020-10-29 13:08:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23920 states. [2020-10-29 13:08:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23920 states to 23920 states and 38352 transitions. [2020-10-29 13:08:24,023 INFO L78 Accepts]: Start accepts. Automaton has 23920 states and 38352 transitions. Word has length 122 [2020-10-29 13:08:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:24,023 INFO L481 AbstractCegarLoop]: Abstraction has 23920 states and 38352 transitions. [2020-10-29 13:08:24,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:08:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 23920 states and 38352 transitions. [2020-10-29 13:08:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:08:24,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:24,063 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] [2020-10-29 13:08:24,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:08:24,064 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:24,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:24,064 INFO L82 PathProgramCache]: Analyzing trace with hash -850125844, now seen corresponding path program 1 times [2020-10-29 13:08:24,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:24,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925751517] [2020-10-29 13:08:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:24,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:08:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:29,816 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:08:29,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:29,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:29,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:08:29,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:29,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:08:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:08:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:29,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925751517] [2020-10-29 13:08:29,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:29,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:08:29,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552427271] [2020-10-29 13:08:29,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:08:29,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:29,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:08:29,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:08:29,891 INFO L87 Difference]: Start difference. First operand 23920 states and 38352 transitions. Second operand 8 states. [2020-10-29 13:08:30,566 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:08:34,637 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-29 13:08:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:37,096 INFO L93 Difference]: Finished difference Result 49466 states and 80496 transitions. [2020-10-29 13:08:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:08:37,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-29 13:08:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:37,186 INFO L225 Difference]: With dead ends: 49466 [2020-10-29 13:08:37,186 INFO L226 Difference]: Without dead ends: 36267 [2020-10-29 13:08:37,223 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 [2020-10-29 13:08:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36267 states. [2020-10-29 13:08:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36267 to 27696. [2020-10-29 13:08:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27696 states. [2020-10-29 13:08:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27696 states to 27696 states and 44336 transitions. [2020-10-29 13:08:39,657 INFO L78 Accepts]: Start accepts. Automaton has 27696 states and 44336 transitions. Word has length 123 [2020-10-29 13:08:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:39,658 INFO L481 AbstractCegarLoop]: Abstraction has 27696 states and 44336 transitions. [2020-10-29 13:08:39,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:08:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 27696 states and 44336 transitions. [2020-10-29 13:08:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 13:08:39,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:39,694 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] [2020-10-29 13:08:39,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:08:39,695 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash -153375352, now seen corresponding path program 1 times [2020-10-29 13:08:39,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:39,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026899277] [2020-10-29 13:08:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:43,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:43,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 13:08:43,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:08:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4133 [2020-10-29 13:08:43,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:43,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:08:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 13:08:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 13:08:43,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:44,490 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:08:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:44,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:44,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:44,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026899277] [2020-10-29 13:08:44,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:44,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:08:44,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71900581] [2020-10-29 13:08:44,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:08:44,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:44,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:08:44,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:08:44,533 INFO L87 Difference]: Start difference. First operand 27696 states and 44336 transitions. Second operand 4 states. [2020-10-29 13:08:45,167 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-29 13:08:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:49,833 INFO L93 Difference]: Finished difference Result 56918 states and 92372 transitions. [2020-10-29 13:08:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:08:49,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 13:08:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:49,948 INFO L225 Difference]: With dead ends: 56918 [2020-10-29 13:08:49,949 INFO L226 Difference]: Without dead ends: 41427 [2020-10-29 13:08:50,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41427 states. [2020-10-29 13:08:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41427 to 41296. [2020-10-29 13:08:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41296 states. [2020-10-29 13:08:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41296 states to 41296 states and 66288 transitions. [2020-10-29 13:08:53,518 INFO L78 Accepts]: Start accepts. Automaton has 41296 states and 66288 transitions. Word has length 123 [2020-10-29 13:08:53,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:53,519 INFO L481 AbstractCegarLoop]: Abstraction has 41296 states and 66288 transitions. [2020-10-29 13:08:53,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:08:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 41296 states and 66288 transitions. [2020-10-29 13:08:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 13:08:53,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:53,549 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] [2020-10-29 13:08:53,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:08:53,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:53,550 INFO L82 PathProgramCache]: Analyzing trace with hash 188245458, now seen corresponding path program 1 times [2020-10-29 13:08:53,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:53,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564223659] [2020-10-29 13:08:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:58,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 13:08:58,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:08:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:08:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:58,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:08:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:08:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 13:08:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:08:59,320 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:08:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:59,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:59,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:08:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:08:59,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564223659] [2020-10-29 13:08:59,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:59,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:08:59,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539514023] [2020-10-29 13:08:59,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:08:59,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:59,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:08:59,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:59,386 INFO L87 Difference]: Start difference. First operand 41296 states and 66288 transitions. Second operand 5 states. [2020-10-29 13:09:04,795 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:09:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:08,979 INFO L93 Difference]: Finished difference Result 121041 states and 194220 transitions. [2020-10-29 13:09:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:08,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 13:09:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:09,136 INFO L225 Difference]: With dead ends: 121041 [2020-10-29 13:09:09,137 INFO L226 Difference]: Without dead ends: 80720 [2020-10-29 13:09:09,195 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 [2020-10-29 13:09:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80720 states. [2020-10-29 13:09:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80720 to 80717. [2020-10-29 13:09:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80717 states. [2020-10-29 13:09:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80717 states to 80717 states and 128700 transitions. [2020-10-29 13:09:16,730 INFO L78 Accepts]: Start accepts. Automaton has 80717 states and 128700 transitions. Word has length 127 [2020-10-29 13:09:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:16,730 INFO L481 AbstractCegarLoop]: Abstraction has 80717 states and 128700 transitions. [2020-10-29 13:09:16,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 80717 states and 128700 transitions. [2020-10-29 13:09:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 13:09:16,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:16,765 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] [2020-10-29 13:09:16,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:09:16,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1951132860, now seen corresponding path program 1 times [2020-10-29 13:09:16,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:16,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941107668] [2020-10-29 13:09:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:21,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 13:09:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:09:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:09:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:22,473 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:09:22,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:22,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:22,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941107668] [2020-10-29 13:09:22,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:22,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:22,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825220187] [2020-10-29 13:09:22,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:22,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:22,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:22,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:22,530 INFO L87 Difference]: Start difference. First operand 80717 states and 128700 transitions. Second operand 5 states. [2020-10-29 13:09:30,054 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:09:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:39,282 INFO L93 Difference]: Finished difference Result 236606 states and 377094 transitions. [2020-10-29 13:09:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:39,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-29 13:09:39,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:39,716 INFO L225 Difference]: With dead ends: 236606 [2020-10-29 13:09:39,717 INFO L226 Difference]: Without dead ends: 157947 [2020-10-29 13:09:39,817 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 [2020-10-29 13:09:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157947 states. [2020-10-29 13:09:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157947 to 157944. [2020-10-29 13:09:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157944 states. [2020-10-29 13:09:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157944 states to 157944 states and 250274 transitions. [2020-10-29 13:09:54,824 INFO L78 Accepts]: Start accepts. Automaton has 157944 states and 250274 transitions. Word has length 129 [2020-10-29 13:09:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:54,825 INFO L481 AbstractCegarLoop]: Abstraction has 157944 states and 250274 transitions. [2020-10-29 13:09:54,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 157944 states and 250274 transitions. [2020-10-29 13:09:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 13:09:54,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:54,934 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] [2020-10-29 13:09:54,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:09:54,935 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:54,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1608148675, now seen corresponding path program 1 times [2020-10-29 13:09:54,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:54,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800141872] [2020-10-29 13:09:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:59,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:59,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 13:09:59,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:09:59,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:09:59,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:59,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:09:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:00,685 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:10:00,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:10:00,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800141872] [2020-10-29 13:10:00,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:00,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:00,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764518337] [2020-10-29 13:10:00,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:00,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:00,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:00,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:00,759 INFO L87 Difference]: Start difference. First operand 157944 states and 250274 transitions. Second operand 5 states. [2020-10-29 13:10:12,368 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:10:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:32,128 INFO L93 Difference]: Finished difference Result 466279 states and 738691 transitions. [2020-10-29 13:10:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:32,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-29 13:10:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:32,765 INFO L225 Difference]: With dead ends: 466279 [2020-10-29 13:10:32,765 INFO L226 Difference]: Without dead ends: 308883 [2020-10-29 13:10:33,137 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 [2020-10-29 13:10:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308883 states.