/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:59:57,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:59:57,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:59:58,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:59:58,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:59:58,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:59:58,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:59:58,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:59:58,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:59:58,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:59:58,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:59:58,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:59:58,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:59:58,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:59:58,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:59:58,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:59:58,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:59:58,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:59:58,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:59:58,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:59:58,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:59:58,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:59:58,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:59:58,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:59:58,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:59:58,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:59:58,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:59:58,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:59:58,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:59:58,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:59:58,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:59:58,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:59:58,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:59:58,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:59:58,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:59:58,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:59:58,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:59:58,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:59:58,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:59:58,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:59:58,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:59:58,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:59:58,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:59:58,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:59:58,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:59:58,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:59:58,188 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:59:58,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:59:58,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:59:58,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:59:58,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:59:58,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:59:58,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:59:58,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:59:58,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:59:58,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:59:58,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:59:58,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:59:58,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:59:58,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:59:58,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:59:58,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:59:58,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:59:58,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:59:58,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:59:58,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:59:58,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:59:58,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:59:58,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:59:58,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:59:58,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:59:58,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:59:58,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:59:58,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:59:58,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:59:58,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:59:58,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:59:58,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 04:59:58,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8572639e/85f54e3ef4c749a19f6a1268eb00ced5/FLAG5f122970f [2020-10-27 04:59:59,495 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:59:59,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 04:59:59,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8572639e/85f54e3ef4c749a19f6a1268eb00ced5/FLAG5f122970f [2020-10-27 04:59:59,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8572639e/85f54e3ef4c749a19f6a1268eb00ced5 [2020-10-27 04:59:59,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:59:59,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:59:59,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:59:59,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:59:59,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:59:59,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:59:59" (1/1) ... [2020-10-27 04:59:59,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418fb9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:59:59, skipping insertion in model container [2020-10-27 04:59:59,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:59:59" (1/1) ... [2020-10-27 04:59:59,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:59:59,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:00:00,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:00,288 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:00:00,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:00,458 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:00:00,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00 WrapperNode [2020-10-27 05:00:00,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:00,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:00:00,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:00:00,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:00:00,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... [2020-10-27 05:00:00,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:00:00,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:00:00,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:00:00,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:00:00,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:00:00,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:00:00,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:00:00,651 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:00:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:00:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:00:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:00:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:00:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:00:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:00:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:00:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:00:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:00:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:00:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:00:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:00:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:00:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:00:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:00:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:00:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:00:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:00:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:00:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:00:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:00:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:00:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:00:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:00:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:00:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:00:02,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:00:02,875 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:00:02,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:02 BoogieIcfgContainer [2020-10-27 05:00:02,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:00:02,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:00:02,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:00:02,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:00:02,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:59:59" (1/3) ... [2020-10-27 05:00:02,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16248150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:02, skipping insertion in model container [2020-10-27 05:00:02,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:00" (2/3) ... [2020-10-27 05:00:02,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16248150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:02, skipping insertion in model container [2020-10-27 05:00:02,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:02" (3/3) ... [2020-10-27 05:00:02,887 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:00:02,900 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:00:02,905 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:00:02,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:00:02,950 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:00:02,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:00:02,950 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:00:02,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:00:02,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:00:02,950 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:00:02,951 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:00:02,951 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:00:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 05:00:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:00:02,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:02,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:02,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:03,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:03,001 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 05:00:03,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:03,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795862179] [2020-10-27 05:00:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:08,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:00:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:00:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 05:00:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:00:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:00:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 05:00:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:00:09,871 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:09,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:09,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:09,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:00:09,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:10,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795862179] [2020-10-27 05:00:10,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:10,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:00:10,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401852105] [2020-10-27 05:00:10,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:00:10,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:10,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:00:10,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:00:10,050 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-27 05:00:11,190 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:00:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:14,133 INFO L93 Difference]: Finished difference Result 602 states and 1036 transitions. [2020-10-27 05:00:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:00:14,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-27 05:00:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:14,168 INFO L225 Difference]: With dead ends: 602 [2020-10-27 05:00:14,168 INFO L226 Difference]: Without dead ends: 452 [2020-10-27 05:00:14,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-27 05:00:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2020-10-27 05:00:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-27 05:00:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 739 transitions. [2020-10-27 05:00:14,314 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 739 transitions. Word has length 115 [2020-10-27 05:00:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:14,315 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 739 transitions. [2020-10-27 05:00:14,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:00:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 739 transitions. [2020-10-27 05:00:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:00:14,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:14,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:14,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:00:14,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:14,324 INFO L82 PathProgramCache]: Analyzing trace with hash 148684735, now seen corresponding path program 1 times [2020-10-27 05:00:14,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:14,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773128230] [2020-10-27 05:00:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:19,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:00:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:00:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:00:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:00:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 05:00:20,667 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:20,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:20,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:00:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:20,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773128230] [2020-10-27 05:00:20,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:20,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:20,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508927731] [2020-10-27 05:00:20,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:20,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:20,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:20,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:20,776 INFO L87 Difference]: Start difference. First operand 448 states and 739 transitions. Second operand 5 states. [2020-10-27 05:00:25,318 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:25,475 INFO L93 Difference]: Finished difference Result 1301 states and 2148 transitions. [2020-10-27 05:00:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:25,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 05:00:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:25,492 INFO L225 Difference]: With dead ends: 1301 [2020-10-27 05:00:25,493 INFO L226 Difference]: Without dead ends: 870 [2020-10-27 05:00:25,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-27 05:00:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 867. [2020-10-27 05:00:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-27 05:00:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1424 transitions. [2020-10-27 05:00:25,604 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1424 transitions. Word has length 118 [2020-10-27 05:00:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:25,606 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1424 transitions. [2020-10-27 05:00:25,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1424 transitions. [2020-10-27 05:00:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:00:25,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:25,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:25,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:00:25,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:25,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:25,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1936006675, now seen corresponding path program 1 times [2020-10-27 05:00:25,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:25,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553769845] [2020-10-27 05:00:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:30,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:30,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:00:30,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:00:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:00:30,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:00:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:32,065 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:32,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:32,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:00:32,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:32,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553769845] [2020-10-27 05:00:32,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:32,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:32,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520353816] [2020-10-27 05:00:32,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:32,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:32,167 INFO L87 Difference]: Start difference. First operand 867 states and 1424 transitions. Second operand 5 states. [2020-10-27 05:00:36,534 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:36,727 INFO L93 Difference]: Finished difference Result 2478 states and 4064 transitions. [2020-10-27 05:00:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:36,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:00:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:36,739 INFO L225 Difference]: With dead ends: 2478 [2020-10-27 05:00:36,740 INFO L226 Difference]: Without dead ends: 1697 [2020-10-27 05:00:36,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-27 05:00:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1694. [2020-10-27 05:00:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-10-27 05:00:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2771 transitions. [2020-10-27 05:00:36,880 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2771 transitions. Word has length 120 [2020-10-27 05:00:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:36,881 INFO L481 AbstractCegarLoop]: Abstraction has 1694 states and 2771 transitions. [2020-10-27 05:00:36,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2771 transitions. [2020-10-27 05:00:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:00:36,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:36,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:36,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:00:36,888 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:36,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1681496823, now seen corresponding path program 1 times [2020-10-27 05:00:36,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:36,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804185084] [2020-10-27 05:00:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:41,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:00:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:00:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:00:41,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:00:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:43,222 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:43,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:43,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:43,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:43,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:00:43,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:43,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804185084] [2020-10-27 05:00:43,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:43,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065166696] [2020-10-27 05:00:43,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:43,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:43,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:43,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:43,319 INFO L87 Difference]: Start difference. First operand 1694 states and 2771 transitions. Second operand 5 states. [2020-10-27 05:00:47,442 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:47,607 INFO L93 Difference]: Finished difference Result 4824 states and 7873 transitions. [2020-10-27 05:00:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:47,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:00:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:47,626 INFO L225 Difference]: With dead ends: 4824 [2020-10-27 05:00:47,626 INFO L226 Difference]: Without dead ends: 3253 [2020-10-27 05:00:47,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2020-10-27 05:00:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3250. [2020-10-27 05:00:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3250 states. [2020-10-27 05:00:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 5275 transitions. [2020-10-27 05:00:47,859 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 5275 transitions. Word has length 120 [2020-10-27 05:00:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:47,860 INFO L481 AbstractCegarLoop]: Abstraction has 3250 states and 5275 transitions. [2020-10-27 05:00:47,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:47,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 5275 transitions. [2020-10-27 05:00:47,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:00:47,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:47,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:47,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:00:47,869 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:47,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1003467604, now seen corresponding path program 1 times [2020-10-27 05:00:47,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:47,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899750548] [2020-10-27 05:00:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:51,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:00:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:00:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 05:00:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:00:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:54,121 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:00:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:54,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899750548] [2020-10-27 05:00:54,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:54,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:54,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915263103] [2020-10-27 05:00:54,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:54,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:54,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:54,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:54,246 INFO L87 Difference]: Start difference. First operand 3250 states and 5275 transitions. Second operand 5 states. [2020-10-27 05:00:59,127 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:59,471 INFO L93 Difference]: Finished difference Result 9332 states and 15125 transitions. [2020-10-27 05:00:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:59,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:00:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:59,511 INFO L225 Difference]: With dead ends: 9332 [2020-10-27 05:00:59,511 INFO L226 Difference]: Without dead ends: 6289 [2020-10-27 05:00:59,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2020-10-27 05:01:00,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 6286. [2020-10-27 05:01:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6286 states. [2020-10-27 05:01:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6286 states to 6286 states and 10157 transitions. [2020-10-27 05:01:00,084 INFO L78 Accepts]: Start accepts. Automaton has 6286 states and 10157 transitions. Word has length 121 [2020-10-27 05:01:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:00,084 INFO L481 AbstractCegarLoop]: Abstraction has 6286 states and 10157 transitions. [2020-10-27 05:01:00,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6286 states and 10157 transitions. [2020-10-27 05:01:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:01:00,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:00,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:00,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:01:00,100 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1237686682, now seen corresponding path program 1 times [2020-10-27 05:01:00,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:00,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575916654] [2020-10-27 05:01:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:00,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:05,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:01:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:06,402 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:06,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:06,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:01:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:06,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575916654] [2020-10-27 05:01:06,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:06,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:06,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843055134] [2020-10-27 05:01:06,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:06,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:06,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:06,496 INFO L87 Difference]: Start difference. First operand 6286 states and 10157 transitions. Second operand 5 states. [2020-10-27 05:01:11,421 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:01:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:11,789 INFO L93 Difference]: Finished difference Result 18569 states and 29997 transitions. [2020-10-27 05:01:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:11,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:01:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:11,853 INFO L225 Difference]: With dead ends: 18569 [2020-10-27 05:01:11,853 INFO L226 Difference]: Without dead ends: 12398 [2020-10-27 05:01:11,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12398 states. [2020-10-27 05:01:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12398 to 12395. [2020-10-27 05:01:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12395 states. [2020-10-27 05:01:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12395 states to 12395 states and 19919 transitions. [2020-10-27 05:01:13,240 INFO L78 Accepts]: Start accepts. Automaton has 12395 states and 19919 transitions. Word has length 122 [2020-10-27 05:01:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:13,241 INFO L481 AbstractCegarLoop]: Abstraction has 12395 states and 19919 transitions. [2020-10-27 05:01:13,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 12395 states and 19919 transitions. [2020-10-27 05:01:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:01:13,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:13,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:13,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:01:13,270 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:13,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:13,271 INFO L82 PathProgramCache]: Analyzing trace with hash -773857359, now seen corresponding path program 1 times [2020-10-27 05:01:13,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:13,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41743262] [2020-10-27 05:01:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:18,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:01:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 05:01:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:19,514 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:19,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:19,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:19,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:01:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:01:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:01:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:19,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41743262] [2020-10-27 05:01:19,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:19,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:01:19,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908675035] [2020-10-27 05:01:19,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:01:19,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:19,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:01:19,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:01:19,611 INFO L87 Difference]: Start difference. First operand 12395 states and 19919 transitions. Second operand 8 states. [2020-10-27 05:01:20,913 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:01:25,614 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:01:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:27,324 INFO L93 Difference]: Finished difference Result 28266 states and 46069 transitions. [2020-10-27 05:01:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:01:27,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-27 05:01:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:27,378 INFO L225 Difference]: With dead ends: 28266 [2020-10-27 05:01:27,379 INFO L226 Difference]: Without dead ends: 21590 [2020-10-27 05:01:27,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:01:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21590 states. [2020-10-27 05:01:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21590 to 12651. [2020-10-27 05:01:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12651 states. [2020-10-27 05:01:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12651 states to 12651 states and 20223 transitions. [2020-10-27 05:01:28,801 INFO L78 Accepts]: Start accepts. Automaton has 12651 states and 20223 transitions. Word has length 122 [2020-10-27 05:01:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:28,801 INFO L481 AbstractCegarLoop]: Abstraction has 12651 states and 20223 transitions. [2020-10-27 05:01:28,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:01:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 12651 states and 20223 transitions. [2020-10-27 05:01:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:01:28,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:28,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:28,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:01:28,928 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:28,928 INFO L82 PathProgramCache]: Analyzing trace with hash -556033536, now seen corresponding path program 1 times [2020-10-27 05:01:28,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:28,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601640908] [2020-10-27 05:01:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:01:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:35,264 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:35,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601640908] [2020-10-27 05:01:35,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:35,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:35,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060250295] [2020-10-27 05:01:35,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:35,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:35,341 INFO L87 Difference]: Start difference. First operand 12651 states and 20223 transitions. Second operand 5 states. [2020-10-27 05:01:40,697 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:01:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:41,437 INFO L93 Difference]: Finished difference Result 37057 states and 59175 transitions. [2020-10-27 05:01:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:41,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:01:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:41,501 INFO L225 Difference]: With dead ends: 37057 [2020-10-27 05:01:41,501 INFO L226 Difference]: Without dead ends: 24718 [2020-10-27 05:01:41,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24718 states. [2020-10-27 05:01:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24718 to 24715. [2020-10-27 05:01:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24715 states. [2020-10-27 05:01:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24715 states to 24715 states and 39207 transitions. [2020-10-27 05:01:43,840 INFO L78 Accepts]: Start accepts. Automaton has 24715 states and 39207 transitions. Word has length 122 [2020-10-27 05:01:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:43,840 INFO L481 AbstractCegarLoop]: Abstraction has 24715 states and 39207 transitions. [2020-10-27 05:01:43,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 24715 states and 39207 transitions. [2020-10-27 05:01:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:01:43,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:43,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:43,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:01:43,882 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:43,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:43,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2085279217, now seen corresponding path program 1 times [2020-10-27 05:01:43,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:43,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975618907] [2020-10-27 05:01:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:45,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:01:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:01:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:01:48,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:01:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:01:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:01:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:50,102 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:50,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:01:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:50,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975618907] [2020-10-27 05:01:50,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:50,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:01:50,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033674482] [2020-10-27 05:01:50,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:01:50,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:50,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:01:50,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:01:50,179 INFO L87 Difference]: Start difference. First operand 24715 states and 39207 transitions. Second operand 8 states. [2020-10-27 05:01:51,548 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:01:57,837 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:02:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:00,445 INFO L93 Difference]: Finished difference Result 44577 states and 71683 transitions. [2020-10-27 05:02:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:02:00,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-27 05:02:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:00,535 INFO L225 Difference]: With dead ends: 44577 [2020-10-27 05:02:00,536 INFO L226 Difference]: Without dead ends: 40654 [2020-10-27 05:02:00,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:02:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40654 states. [2020-10-27 05:02:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40654 to 24715. [2020-10-27 05:02:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24715 states. [2020-10-27 05:02:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24715 states to 24715 states and 39175 transitions. [2020-10-27 05:02:03,067 INFO L78 Accepts]: Start accepts. Automaton has 24715 states and 39175 transitions. Word has length 123 [2020-10-27 05:02:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:03,067 INFO L481 AbstractCegarLoop]: Abstraction has 24715 states and 39175 transitions. [2020-10-27 05:02:03,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:02:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 24715 states and 39175 transitions. [2020-10-27 05:02:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:02:03,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:03,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:03,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:02:03,095 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720712, now seen corresponding path program 1 times [2020-10-27 05:02:03,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:03,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268457334] [2020-10-27 05:02:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:03,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:02:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:02:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3838 [2020-10-27 05:02:06,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:02:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:02:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:02:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:08,141 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:08,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:08,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268457334] [2020-10-27 05:02:08,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:08,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:02:08,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375713531] [2020-10-27 05:02:08,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:02:08,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:02:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:02:08,189 INFO L87 Difference]: Start difference. First operand 24715 states and 39175 transitions. Second operand 4 states. [2020-10-27 05:02:09,412 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:02:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:15,316 INFO L93 Difference]: Finished difference Result 52241 states and 83979 transitions. [2020-10-27 05:02:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:02:15,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 05:02:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:15,375 INFO L225 Difference]: With dead ends: 52241 [2020-10-27 05:02:15,375 INFO L226 Difference]: Without dead ends: 37934 [2020-10-27 05:02:15,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37934 states. [2020-10-27 05:02:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37934 to 37803. [2020-10-27 05:02:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37803 states. [2020-10-27 05:02:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37803 states to 37803 states and 60199 transitions. [2020-10-27 05:02:19,410 INFO L78 Accepts]: Start accepts. Automaton has 37803 states and 60199 transitions. Word has length 123 [2020-10-27 05:02:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:19,410 INFO L481 AbstractCegarLoop]: Abstraction has 37803 states and 60199 transitions. [2020-10-27 05:02:19,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:02:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 37803 states and 60199 transitions. [2020-10-27 05:02:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:02:19,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:19,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:19,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:02:19,435 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:19,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2074117376, now seen corresponding path program 1 times [2020-10-27 05:02:19,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:19,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989089160] [2020-10-27 05:02:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:20,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:24,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:02:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:25,684 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:25,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:25,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:25,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:02:25,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:25,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989089160] [2020-10-27 05:02:25,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:25,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:25,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700544744] [2020-10-27 05:02:25,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:25,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:25,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:25,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:25,779 INFO L87 Difference]: Start difference. First operand 37803 states and 60199 transitions. Second operand 5 states. [2020-10-27 05:02:33,765 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:38,301 INFO L93 Difference]: Finished difference Result 109344 states and 173863 transitions. [2020-10-27 05:02:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:38,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 05:02:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:38,403 INFO L225 Difference]: With dead ends: 109344 [2020-10-27 05:02:38,404 INFO L226 Difference]: Without dead ends: 74045 [2020-10-27 05:02:38,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74045 states. [2020-10-27 05:02:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74045 to 74042. [2020-10-27 05:02:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74042 states. [2020-10-27 05:02:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74042 states to 74042 states and 117187 transitions. [2020-10-27 05:02:46,881 INFO L78 Accepts]: Start accepts. Automaton has 74042 states and 117187 transitions. Word has length 127 [2020-10-27 05:02:46,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:46,881 INFO L481 AbstractCegarLoop]: Abstraction has 74042 states and 117187 transitions. [2020-10-27 05:02:46,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 74042 states and 117187 transitions. [2020-10-27 05:02:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:02:46,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:46,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:46,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:02:46,951 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:46,952 INFO L82 PathProgramCache]: Analyzing trace with hash -334766762, now seen corresponding path program 1 times [2020-10-27 05:02:46,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:46,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393616708] [2020-10-27 05:02:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:52,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:52,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:02:52,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:02:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:02:52,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 05:02:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:53,249 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:53,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:02:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:53,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393616708] [2020-10-27 05:02:53,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:53,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:53,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877281063] [2020-10-27 05:02:53,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:53,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:53,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:53,328 INFO L87 Difference]: Start difference. First operand 74042 states and 117187 transitions. Second operand 5 states. [2020-10-27 05:03:04,495 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:03:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:15,204 INFO L93 Difference]: Finished difference Result 214937 states and 339785 transitions. [2020-10-27 05:03:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:15,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 05:03:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:15,499 INFO L225 Difference]: With dead ends: 214937 [2020-10-27 05:03:15,499 INFO L226 Difference]: Without dead ends: 144918 [2020-10-27 05:03:15,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144918 states. [2020-10-27 05:03:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144918 to 144915. [2020-10-27 05:03:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144915 states. [2020-10-27 05:03:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144915 states to 144915 states and 228197 transitions. [2020-10-27 05:03:33,738 INFO L78 Accepts]: Start accepts. Automaton has 144915 states and 228197 transitions. Word has length 129 [2020-10-27 05:03:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:33,738 INFO L481 AbstractCegarLoop]: Abstraction has 144915 states and 228197 transitions. [2020-10-27 05:03:33,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 144915 states and 228197 transitions. [2020-10-27 05:03:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:03:33,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:33,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:33,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:03:33,818 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:33,818 INFO L82 PathProgramCache]: Analyzing trace with hash -941720114, now seen corresponding path program 1 times [2020-10-27 05:03:33,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:33,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585682629] [2020-10-27 05:03:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking...