/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:29:41,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:29:41,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:29:41,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:29:41,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:29:41,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:29:41,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:29:41,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:29:41,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:29:41,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:29:41,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:29:41,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:29:41,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:29:41,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:29:41,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:29:41,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:29:41,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:29:41,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:29:41,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:29:41,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:29:41,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:29:41,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:29:41,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:29:41,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:29:41,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:29:41,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:29:41,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:29:41,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:29:41,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:29:41,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:29:41,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:29:41,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:29:41,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:29:41,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:29:41,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:29:41,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:29:41,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:29:41,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:29:41,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:29:41,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:29:41,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:29:41,897 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 [2020-09-25 03:29:41,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:29:41,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:29:41,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:29:41,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:29:41,924 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:29:41,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:29:41,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:29:41,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:29:41,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:29:41,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:29:41,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:29:41,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:29:41,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:29:41,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:29:41,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:29:41,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:29:41,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:29:41,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:29:41,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:29:41,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:29:41,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:29:41,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:29:41,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:29:41,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:29:41,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:29:41,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:29:41,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:29:41,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:29:41,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:29:41,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:29:42,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:29:42,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:29:42,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:29:42,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:29:42,423 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:29:42,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 03:29:42,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d01c125/111cf2b78ea44cfd940e0ed0f1a27ee5/FLAGfffb2de8a [2020-09-25 03:29:43,227 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:29:43,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 03:29:43,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d01c125/111cf2b78ea44cfd940e0ed0f1a27ee5/FLAGfffb2de8a [2020-09-25 03:29:43,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d01c125/111cf2b78ea44cfd940e0ed0f1a27ee5 [2020-09-25 03:29:43,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:29:43,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:29:43,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:43,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:29:43,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:29:43,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:43" (1/1) ... [2020-09-25 03:29:43,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:43, skipping insertion in model container [2020-09-25 03:29:43,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:29:43" (1/1) ... [2020-09-25 03:29:43,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:29:43,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:29:44,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:44,119 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:29:44,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:29:44,316 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:29:44,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44 WrapperNode [2020-09-25 03:29:44,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:29:44,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:29:44,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:29:44,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:29:44,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (1/1) ... [2020-09-25 03:29:44,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:29:44,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:29:44,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:29:44,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:29:44,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (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 [2020-09-25 03:29:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:29:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:29:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:29:44,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:29:44,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:29:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 03:29:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 03:29:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 03:29:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:29:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:29:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 03:29:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 03:29:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 03:29:44,529 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 03:29:44,529 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 03:29:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 03:29:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 03:29:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:29:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:29:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:29:46,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:29:46,266 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:29:46,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:46 BoogieIcfgContainer [2020-09-25 03:29:46,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:29:46,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:29:46,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:29:46,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:29:46,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:29:43" (1/3) ... [2020-09-25 03:29:46,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7533a55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:46, skipping insertion in model container [2020-09-25 03:29:46,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:29:44" (2/3) ... [2020-09-25 03:29:46,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7533a55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:29:46, skipping insertion in model container [2020-09-25 03:29:46,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:29:46" (3/3) ... [2020-09-25 03:29:46,291 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 03:29:46,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:29:46,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:29:46,339 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:29:46,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:29:46,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:29:46,377 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:29:46,377 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:29:46,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:29:46,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:29:46,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:29:46,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:29:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states. [2020-09-25 03:29:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-25 03:29:46,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:46,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:46,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:46,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1493724513, now seen corresponding path program 1 times [2020-09-25 03:29:46,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:46,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328204436] [2020-09-25 03:29:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:52,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-09-25 03:29:52,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:29:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 03:29:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:29:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-09-25 03:29:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 03:29:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:29:52,683 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-09-25 03:29:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:29:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:52,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:29:52,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:29:52,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:29:52,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 03:29:52,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:29:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:29:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:29:52,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:29:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:29:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:29:53,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328204436] [2020-09-25 03:29:53,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:29:53,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:29:53,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202765241] [2020-09-25 03:29:53,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:29:53,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:29:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:29:53,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:29:53,079 INFO L87 Difference]: Start difference. First operand 822 states. Second operand 4 states. [2020-09-25 03:29:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:29:56,539 INFO L93 Difference]: Finished difference Result 1488 states and 1948 transitions. [2020-09-25 03:29:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:29:56,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-09-25 03:29:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:29:56,587 INFO L225 Difference]: With dead ends: 1488 [2020-09-25 03:29:56,587 INFO L226 Difference]: Without dead ends: 1109 [2020-09-25 03:29:56,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:29:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-09-25 03:29:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1102. [2020-09-25 03:29:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-09-25 03:29:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1345 transitions. [2020-09-25 03:29:56,741 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1345 transitions. Word has length 418 [2020-09-25 03:29:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:29:56,743 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1345 transitions. [2020-09-25 03:29:56,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:29:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1345 transitions. [2020-09-25 03:29:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-25 03:29:56,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:29:56,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:29:56,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:29:56,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:29:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:29:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1571498271, now seen corresponding path program 1 times [2020-09-25 03:29:56,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:29:56,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174668522] [2020-09-25 03:29:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:29:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:29:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:57,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:29:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:01,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:01,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-09-25 03:30:01,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:30:01,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 03:30:01,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:30:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-09-25 03:30:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-09-25 03:30:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:02,455 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-09-25 03:30:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:02,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:02,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:30:02,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 03:30:02,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:02,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174668522] [2020-09-25 03:30:02,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:02,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:30:02,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789815694] [2020-09-25 03:30:02,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:30:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:30:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:02,794 INFO L87 Difference]: Start difference. First operand 1102 states and 1345 transitions. Second operand 4 states. [2020-09-25 03:30:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:05,477 INFO L93 Difference]: Finished difference Result 2222 states and 2792 transitions. [2020-09-25 03:30:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:30:05,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-09-25 03:30:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:05,491 INFO L225 Difference]: With dead ends: 2222 [2020-09-25 03:30:05,492 INFO L226 Difference]: Without dead ends: 1828 [2020-09-25 03:30:05,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-25 03:30:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1816. [2020-09-25 03:30:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-09-25 03:30:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2253 transitions. [2020-09-25 03:30:05,574 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2253 transitions. Word has length 418 [2020-09-25 03:30:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:05,576 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2253 transitions. [2020-09-25 03:30:05,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:30:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2253 transitions. [2020-09-25 03:30:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-25 03:30:05,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:05,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:05,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:30:05,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash 924566943, now seen corresponding path program 1 times [2020-09-25 03:30:05,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:05,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339758822] [2020-09-25 03:30:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:05,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:07,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:10,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-09-25 03:30:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:30:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 03:30:10,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:30:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-09-25 03:30:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-09-25 03:30:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:11,074 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-09-25 03:30:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:11,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:11,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:30:11,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:11,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 03:30:11,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:11,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339758822] [2020-09-25 03:30:11,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:11,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:30:11,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774835392] [2020-09-25 03:30:11,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:30:11,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:11,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:30:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:11,351 INFO L87 Difference]: Start difference. First operand 1816 states and 2253 transitions. Second operand 4 states. [2020-09-25 03:30:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:13,902 INFO L93 Difference]: Finished difference Result 3904 states and 4955 transitions. [2020-09-25 03:30:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:30:13,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-09-25 03:30:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:13,921 INFO L225 Difference]: With dead ends: 3904 [2020-09-25 03:30:13,921 INFO L226 Difference]: Without dead ends: 3194 [2020-09-25 03:30:13,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-25 03:30:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3172. [2020-09-25 03:30:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3172 states. [2020-09-25 03:30:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 3977 transitions. [2020-09-25 03:30:14,021 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 3977 transitions. Word has length 418 [2020-09-25 03:30:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:14,022 INFO L479 AbstractCegarLoop]: Abstraction has 3172 states and 3977 transitions. [2020-09-25 03:30:14,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:30:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 3977 transitions. [2020-09-25 03:30:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-25 03:30:14,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:14,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:14,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:30:14,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:14,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1033201695, now seen corresponding path program 1 times [2020-09-25 03:30:14,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:14,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069113889] [2020-09-25 03:30:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:19,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:19,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-09-25 03:30:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:30:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 03:30:19,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 03:30:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 03:30:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:19,764 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-09-25 03:30:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:19,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:19,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:30:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:30:19,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:20,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069113889] [2020-09-25 03:30:20,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:20,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:30:20,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045909325] [2020-09-25 03:30:20,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:30:20,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:20,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:30:20,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:30:20,117 INFO L87 Difference]: Start difference. First operand 3172 states and 3977 transitions. Second operand 5 states. [2020-09-25 03:30:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:25,336 INFO L93 Difference]: Finished difference Result 8867 states and 11187 transitions. [2020-09-25 03:30:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:30:25,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2020-09-25 03:30:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:25,368 INFO L225 Difference]: With dead ends: 8867 [2020-09-25 03:30:25,368 INFO L226 Difference]: Without dead ends: 5977 [2020-09-25 03:30:25,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:30:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5977 states. [2020-09-25 03:30:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5977 to 5975. [2020-09-25 03:30:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5975 states. [2020-09-25 03:30:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 7480 transitions. [2020-09-25 03:30:25,617 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 7480 transitions. Word has length 418 [2020-09-25 03:30:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:25,618 INFO L479 AbstractCegarLoop]: Abstraction has 5975 states and 7480 transitions. [2020-09-25 03:30:25,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:30:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 7480 transitions. [2020-09-25 03:30:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-25 03:30:25,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:25,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:25,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:30:25,636 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:25,636 INFO L82 PathProgramCache]: Analyzing trace with hash -725792445, now seen corresponding path program 1 times [2020-09-25 03:30:25,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:25,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799245738] [2020-09-25 03:30:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking...