/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.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:01:26,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:01:26,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:01:26,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:01:26,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:01:26,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:01:26,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:01:26,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:01:26,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:01:26,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:01:26,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:01:26,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:01:26,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:01:26,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:01:26,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:01:26,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:01:26,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:01:26,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:01:26,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:01:26,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:01:26,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:01:26,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:01:26,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:01:26,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:01:26,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:01:26,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:01:26,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:01:26,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:01:26,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:01:26,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:01:26,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:01:26,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:01:26,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:01:26,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:01:26,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:01:26,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:01:26,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:01:26,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:01:26,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:01:26,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:01:26,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:01:26,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:01:26,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:01:26,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:01:26,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:01:26,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:01:26,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:01:26,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:01:26,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:01:26,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:01:26,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:01:26,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:01:26,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:01:26,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:01:26,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:01:26,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:01:26,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:01:26,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:01:26,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:01:26,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:01:26,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:01:26,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:01:26,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:01:26,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:01:26,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:01:26,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:01:26,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:01:26,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:01:26,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:01:26,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:01:26,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:01:26,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:01:26,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:01:26,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:01:26,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:01:26,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:01:26,905 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:01:26,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:01:26,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b8ebc9a5/8f6587010bc9443fa98278b451e52338/FLAG986a7852c [2020-10-27 05:01:27,783 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:01:27,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:01:27,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b8ebc9a5/8f6587010bc9443fa98278b451e52338/FLAG986a7852c [2020-10-27 05:01:27,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b8ebc9a5/8f6587010bc9443fa98278b451e52338 [2020-10-27 05:01:27,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:01:27,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:01:27,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:01:27,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:01:27,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:01:27,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:01:27" (1/1) ... [2020-10-27 05:01:27,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1bf27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:27, skipping insertion in model container [2020-10-27 05:01:27,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:01:27" (1/1) ... [2020-10-27 05:01:28,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:01:28,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:01:28,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:01:28,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:01:28,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:01:28,902 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:01:28,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28 WrapperNode [2020-10-27 05:01:28,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:01:28,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:01:28,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:01:28,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:01:28,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:28,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:28,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:28,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:28,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:28,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:29,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (1/1) ... [2020-10-27 05:01:29,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:01:29,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:01:29,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:01:29,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:01:29,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (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 05:01:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:01:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:01:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:01:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:01:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:01:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:01:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:01:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:01:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:01:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:01:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:01:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:01:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:01:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:01:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:01:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:01:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:01:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:01:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:01:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:01:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:01:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:01:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:01:30,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:01:30,874 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:01:30,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:01:30 BoogieIcfgContainer [2020-10-27 05:01:30,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:01:30,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:01:30,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:01:30,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:01:30,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:01:27" (1/3) ... [2020-10-27 05:01:30,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e406d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:01:30, skipping insertion in model container [2020-10-27 05:01:30,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:01:28" (2/3) ... [2020-10-27 05:01:30,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e406d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:01:30, skipping insertion in model container [2020-10-27 05:01:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:01:30" (3/3) ... [2020-10-27 05:01:30,887 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:01:30,901 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:01:30,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:01:30,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:01:30,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:01:30,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:01:30,955 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:01:30,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:01:30,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:01:30,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:01:30,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:01:30,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:01:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 05:01:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:01:30,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:31,000 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 05:01:31,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 05:01:31,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:31,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980335855] [2020-10-27 05:01:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:01:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:01:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:01:36,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:01:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:01:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 05:01:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 05:01:37,408 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:37,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:37,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 05:01:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:37,526 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 05:01:37,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980335855] [2020-10-27 05:01:37,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:37,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:01:37,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817173786] [2020-10-27 05:01:37,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:01:37,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:01:37,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:01:37,553 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-27 05:01:38,254 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:01:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:40,809 INFO L93 Difference]: Finished difference Result 602 states and 1036 transitions. [2020-10-27 05:01:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:01:40,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-27 05:01:40,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:40,858 INFO L225 Difference]: With dead ends: 602 [2020-10-27 05:01:40,858 INFO L226 Difference]: Without dead ends: 452 [2020-10-27 05:01:40,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-27 05:01:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2020-10-27 05:01:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-27 05:01:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 739 transitions. [2020-10-27 05:01:41,022 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 739 transitions. Word has length 115 [2020-10-27 05:01:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:41,023 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 739 transitions. [2020-10-27 05:01:41,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:01:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 739 transitions. [2020-10-27 05:01:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:01:41,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:41,030 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 05:01:41,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:01:41,031 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 148684735, now seen corresponding path program 1 times [2020-10-27 05:01:41,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:41,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590728554] [2020-10-27 05:01:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:46,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:01:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:01:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:01:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:01:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:01:46,888 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:46,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:46,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:46,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:01:46,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:46,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:01:47,025 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 05:01:47,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590728554] [2020-10-27 05:01:47,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:47,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:47,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727920782] [2020-10-27 05:01:47,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:47,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:47,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:47,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:47,041 INFO L87 Difference]: Start difference. First operand 448 states and 739 transitions. Second operand 5 states. [2020-10-27 05:01:50,596 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:01:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:50,748 INFO L93 Difference]: Finished difference Result 1301 states and 2148 transitions. [2020-10-27 05:01:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:50,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 05:01:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:50,762 INFO L225 Difference]: With dead ends: 1301 [2020-10-27 05:01:50,763 INFO L226 Difference]: Without dead ends: 870 [2020-10-27 05:01:50,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-10-27 05:01:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 867. [2020-10-27 05:01:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-27 05:01:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1424 transitions. [2020-10-27 05:01:50,878 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1424 transitions. Word has length 118 [2020-10-27 05:01:50,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:50,880 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1424 transitions. [2020-10-27 05:01:50,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1424 transitions. [2020-10-27 05:01:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:01:50,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:50,891 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 05:01:50,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:01:50,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1936006675, now seen corresponding path program 1 times [2020-10-27 05:01:50,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:50,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685641596] [2020-10-27 05:01:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:55,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:01:55,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:01:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:01:55,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:55,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:01:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:56,727 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:56,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:56,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:56,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:56,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:56,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:01:56,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:56,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:56,842 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 05:01:56,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685641596] [2020-10-27 05:01:56,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:56,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:56,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901415637] [2020-10-27 05:01:56,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:56,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:56,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:56,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:56,847 INFO L87 Difference]: Start difference. First operand 867 states and 1424 transitions. Second operand 5 states. [2020-10-27 05:01:59,968 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:00,112 INFO L93 Difference]: Finished difference Result 2478 states and 4064 transitions. [2020-10-27 05:02:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:00,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:02:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:00,128 INFO L225 Difference]: With dead ends: 2478 [2020-10-27 05:02:00,128 INFO L226 Difference]: Without dead ends: 1697 [2020-10-27 05:02:00,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-27 05:02:00,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1694. [2020-10-27 05:02:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-10-27 05:02:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2771 transitions. [2020-10-27 05:02:00,262 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2771 transitions. Word has length 120 [2020-10-27 05:02:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:00,264 INFO L481 AbstractCegarLoop]: Abstraction has 1694 states and 2771 transitions. [2020-10-27 05:02:00,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2771 transitions. [2020-10-27 05:02:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:02:00,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:00,270 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] [2020-10-27 05:02:00,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:02:00,271 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1681496823, now seen corresponding path program 1 times [2020-10-27 05:02:00,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:00,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717197152] [2020-10-27 05:02:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:01,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:05,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:05,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:02:05,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:02:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 05:02:05,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:02:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:06,091 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:06,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:06,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:06,198 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 05:02:06,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717197152] [2020-10-27 05:02:06,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:06,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:06,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118734762] [2020-10-27 05:02:06,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:06,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:06,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:06,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:06,202 INFO L87 Difference]: Start difference. First operand 1694 states and 2771 transitions. Second operand 5 states. [2020-10-27 05:02:09,062 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:09,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:09,198 INFO L93 Difference]: Finished difference Result 4824 states and 7873 transitions. [2020-10-27 05:02:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:09,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:02:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:09,218 INFO L225 Difference]: With dead ends: 4824 [2020-10-27 05:02:09,218 INFO L226 Difference]: Without dead ends: 3253 [2020-10-27 05:02:09,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2020-10-27 05:02:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3250. [2020-10-27 05:02:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3250 states. [2020-10-27 05:02:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 5275 transitions. [2020-10-27 05:02:09,442 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 5275 transitions. Word has length 120 [2020-10-27 05:02:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:09,442 INFO L481 AbstractCegarLoop]: Abstraction has 3250 states and 5275 transitions. [2020-10-27 05:02:09,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 5275 transitions. [2020-10-27 05:02:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:02:09,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:09,456 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 05:02:09,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:02:09,457 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1003467604, now seen corresponding path program 1 times [2020-10-27 05:02:09,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:09,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619804863] [2020-10-27 05:02:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:14,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:02:14,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:02:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:02:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:02:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:15,315 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:15,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:15,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:15,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:02:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:15,401 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 05:02:15,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619804863] [2020-10-27 05:02:15,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:15,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:15,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453858190] [2020-10-27 05:02:15,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:15,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:15,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:15,404 INFO L87 Difference]: Start difference. First operand 3250 states and 5275 transitions. Second operand 5 states. [2020-10-27 05:02:18,294 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:18,439 INFO L93 Difference]: Finished difference Result 9452 states and 15325 transitions. [2020-10-27 05:02:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:18,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:02:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:18,474 INFO L225 Difference]: With dead ends: 9452 [2020-10-27 05:02:18,475 INFO L226 Difference]: Without dead ends: 6325 [2020-10-27 05:02:18,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2020-10-27 05:02:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 6322. [2020-10-27 05:02:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6322 states. [2020-10-27 05:02:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 10195 transitions. [2020-10-27 05:02:18,913 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 10195 transitions. Word has length 121 [2020-10-27 05:02:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:18,914 INFO L481 AbstractCegarLoop]: Abstraction has 6322 states and 10195 transitions. [2020-10-27 05:02:18,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 10195 transitions. [2020-10-27 05:02:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:02:18,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:18,928 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 05:02:18,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:02:18,929 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:18,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1237686682, now seen corresponding path program 1 times [2020-10-27 05:02:18,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:18,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336539798] [2020-10-27 05:02:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:23,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:02:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:24,655 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:24,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:24,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:24,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:02:24,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:24,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:24,748 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 05:02:24,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336539798] [2020-10-27 05:02:24,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:24,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:24,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88152167] [2020-10-27 05:02:24,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:24,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:24,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:24,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:24,750 INFO L87 Difference]: Start difference. First operand 6322 states and 10195 transitions. Second operand 5 states. [2020-10-27 05:02:28,187 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:28,498 INFO L93 Difference]: Finished difference Result 18369 states and 29579 transitions. [2020-10-27 05:02:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:28,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:02:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:28,560 INFO L225 Difference]: With dead ends: 18369 [2020-10-27 05:02:28,560 INFO L226 Difference]: Without dead ends: 12454 [2020-10-27 05:02:28,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12454 states. [2020-10-27 05:02:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12454 to 12451. [2020-10-27 05:02:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12451 states. [2020-10-27 05:02:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12451 states to 12451 states and 19959 transitions. [2020-10-27 05:02:29,558 INFO L78 Accepts]: Start accepts. Automaton has 12451 states and 19959 transitions. Word has length 122 [2020-10-27 05:02:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:29,558 INFO L481 AbstractCegarLoop]: Abstraction has 12451 states and 19959 transitions. [2020-10-27 05:02:29,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 12451 states and 19959 transitions. [2020-10-27 05:02:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:02:29,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:29,584 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 05:02:29,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:02:29,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1995243197, now seen corresponding path program 1 times [2020-10-27 05:02:29,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:29,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78510667] [2020-10-27 05:02:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:34,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:34,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:02:34,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:02:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 05:02:34,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:02:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:02:34,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:02:34,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:35,396 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:35,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:35,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:35,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:02:35,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:02:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:02:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:35,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78510667] [2020-10-27 05:02:35,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:35,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:02:35,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338930380] [2020-10-27 05:02:35,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:02:35,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:35,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:02:35,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:02:35,498 INFO L87 Difference]: Start difference. First operand 12451 states and 19959 transitions. Second operand 8 states. [2020-10-27 05:02:36,193 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:40,042 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:02:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:41,218 INFO L93 Difference]: Finished difference Result 27906 states and 45397 transitions. [2020-10-27 05:02:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:02:41,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-27 05:02:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:41,275 INFO L225 Difference]: With dead ends: 27906 [2020-10-27 05:02:41,275 INFO L226 Difference]: Without dead ends: 21230 [2020-10-27 05:02:41,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:02:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21230 states. [2020-10-27 05:02:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21230 to 12595. [2020-10-27 05:02:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12595 states. [2020-10-27 05:02:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12595 states to 12595 states and 20055 transitions. [2020-10-27 05:02:42,332 INFO L78 Accepts]: Start accepts. Automaton has 12595 states and 20055 transitions. Word has length 122 [2020-10-27 05:02:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:42,332 INFO L481 AbstractCegarLoop]: Abstraction has 12595 states and 20055 transitions. [2020-10-27 05:02:42,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:02:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 12595 states and 20055 transitions. [2020-10-27 05:02:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:02:42,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:42,356 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 05:02:42,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:02:42,357 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:42,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:42,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1843922724, now seen corresponding path program 1 times [2020-10-27 05:02:42,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:42,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765833855] [2020-10-27 05:02:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:47,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:47,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:02:47,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:02:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:02:47,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:02:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:48,068 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:02:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:48,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:48,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:02:48,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:48,141 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 05:02:48,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765833855] [2020-10-27 05:02:48,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:48,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:48,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762417196] [2020-10-27 05:02:48,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:48,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:48,143 INFO L87 Difference]: Start difference. First operand 12595 states and 20055 transitions. Second operand 5 states. [2020-10-27 05:02:52,380 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:53,081 INFO L93 Difference]: Finished difference Result 36529 states and 58155 transitions. [2020-10-27 05:02:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:53,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:02:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:53,136 INFO L225 Difference]: With dead ends: 36529 [2020-10-27 05:02:53,136 INFO L226 Difference]: Without dead ends: 24526 [2020-10-27 05:02:53,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24526 states. [2020-10-27 05:02:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24526 to 24523. [2020-10-27 05:02:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24523 states. [2020-10-27 05:02:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24523 states to 24523 states and 38887 transitions. [2020-10-27 05:02:55,271 INFO L78 Accepts]: Start accepts. Automaton has 24523 states and 38887 transitions. Word has length 122 [2020-10-27 05:02:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:55,271 INFO L481 AbstractCegarLoop]: Abstraction has 24523 states and 38887 transitions. [2020-10-27 05:02:55,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24523 states and 38887 transitions. [2020-10-27 05:02:55,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:02:55,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:55,309 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 05:02:55,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:02:55,310 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:55,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1595896889, now seen corresponding path program 1 times [2020-10-27 05:02:55,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:55,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600121922] [2020-10-27 05:02:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:00,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:03:00,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:03:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:03:00,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:03:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:03:00,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:03:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:01,062 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:01,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:03:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:01,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600121922] [2020-10-27 05:03:01,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:01,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:03:01,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45137765] [2020-10-27 05:03:01,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:03:01,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:01,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:03:01,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:03:01,160 INFO L87 Difference]: Start difference. First operand 24523 states and 38887 transitions. Second operand 8 states. [2020-10-27 05:03:01,860 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:03:05,977 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:03:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:08,719 INFO L93 Difference]: Finished difference Result 46009 states and 74091 transitions. [2020-10-27 05:03:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:03:08,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-27 05:03:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:08,809 INFO L225 Difference]: With dead ends: 46009 [2020-10-27 05:03:08,809 INFO L226 Difference]: Without dead ends: 42182 [2020-10-27 05:03:08,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:03:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42182 states. [2020-10-27 05:03:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42182 to 24715. [2020-10-27 05:03:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24715 states. [2020-10-27 05:03:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24715 states to 24715 states and 39175 transitions. [2020-10-27 05:03:11,050 INFO L78 Accepts]: Start accepts. Automaton has 24715 states and 39175 transitions. Word has length 123 [2020-10-27 05:03:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:11,050 INFO L481 AbstractCegarLoop]: Abstraction has 24715 states and 39175 transitions. [2020-10-27 05:03:11,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:03:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24715 states and 39175 transitions. [2020-10-27 05:03:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:03:11,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:11,076 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 05:03:11,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:03:11,077 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720712, now seen corresponding path program 1 times [2020-10-27 05:03:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:11,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955721250] [2020-10-27 05:03:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:14,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:14,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:03:14,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:03:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3775 [2020-10-27 05:03:14,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:03:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:03:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:15,609 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:15,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955721250] [2020-10-27 05:03:15,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:15,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:03:15,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112352883] [2020-10-27 05:03:15,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:03:15,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:15,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:03:15,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:03:15,652 INFO L87 Difference]: Start difference. First operand 24715 states and 39175 transitions. Second operand 4 states. [2020-10-27 05:03:16,293 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:03:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:21,508 INFO L93 Difference]: Finished difference Result 52241 states and 83979 transitions. [2020-10-27 05:03:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:03:21,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 05:03:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:21,585 INFO L225 Difference]: With dead ends: 52241 [2020-10-27 05:03:21,585 INFO L226 Difference]: Without dead ends: 37934 [2020-10-27 05:03:21,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37934 states. [2020-10-27 05:03:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37934 to 37803. [2020-10-27 05:03:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37803 states. [2020-10-27 05:03:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37803 states to 37803 states and 60199 transitions. [2020-10-27 05:03:25,099 INFO L78 Accepts]: Start accepts. Automaton has 37803 states and 60199 transitions. Word has length 123 [2020-10-27 05:03:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:25,100 INFO L481 AbstractCegarLoop]: Abstraction has 37803 states and 60199 transitions. [2020-10-27 05:03:25,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:03:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 37803 states and 60199 transitions. [2020-10-27 05:03:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:03:25,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:25,124 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 05:03:25,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:03:25,124 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:25,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2074117376, now seen corresponding path program 1 times [2020-10-27 05:03:25,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:25,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849875249] [2020-10-27 05:03:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:03:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:03:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:03:30,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:03:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:30,875 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:30,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:30,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:30,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849875249] [2020-10-27 05:03:30,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:30,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:30,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404551673] [2020-10-27 05:03:30,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:30,933 INFO L87 Difference]: Start difference. First operand 37803 states and 60199 transitions. Second operand 5 states. [2020-10-27 05:03:36,991 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:03:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:41,014 INFO L93 Difference]: Finished difference Result 109344 states and 173863 transitions. [2020-10-27 05:03:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:41,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 05:03:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:41,136 INFO L225 Difference]: With dead ends: 109344 [2020-10-27 05:03:41,137 INFO L226 Difference]: Without dead ends: 74045 [2020-10-27 05:03:41,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74045 states. [2020-10-27 05:03:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74045 to 74042. [2020-10-27 05:03:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74042 states. [2020-10-27 05:03:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74042 states to 74042 states and 117187 transitions. [2020-10-27 05:03:49,290 INFO L78 Accepts]: Start accepts. Automaton has 74042 states and 117187 transitions. Word has length 127 [2020-10-27 05:03:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:49,290 INFO L481 AbstractCegarLoop]: Abstraction has 74042 states and 117187 transitions. [2020-10-27 05:03:49,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 74042 states and 117187 transitions. [2020-10-27 05:03:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:03:49,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:49,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:03:49,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:03:49,350 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash -334766762, now seen corresponding path program 1 times [2020-10-27 05:03:49,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:49,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415573985] [2020-10-27 05:03:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:54,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:03:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:03:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:03:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 05:03:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:55,142 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:03:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:03:55,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:55,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415573985] [2020-10-27 05:03:55,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:55,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:55,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6782424] [2020-10-27 05:03:55,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:55,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:55,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:55,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:55,229 INFO L87 Difference]: Start difference. First operand 74042 states and 117187 transitions. Second operand 5 states. [2020-10-27 05:04:04,716 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:04:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:14,683 INFO L93 Difference]: Finished difference Result 214937 states and 339785 transitions. [2020-10-27 05:04:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:14,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 05:04:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:15,008 INFO L225 Difference]: With dead ends: 214937 [2020-10-27 05:04:15,009 INFO L226 Difference]: Without dead ends: 144918 [2020-10-27 05:04:15,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144918 states. [2020-10-27 05:04:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144918 to 144915. [2020-10-27 05:04:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144915 states. [2020-10-27 05:04:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144915 states to 144915 states and 228197 transitions. [2020-10-27 05:04:32,516 INFO L78 Accepts]: Start accepts. Automaton has 144915 states and 228197 transitions. Word has length 129 [2020-10-27 05:04:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:32,516 INFO L481 AbstractCegarLoop]: Abstraction has 144915 states and 228197 transitions. [2020-10-27 05:04:32,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 144915 states and 228197 transitions. [2020-10-27 05:04:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:04:32,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:32,591 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 05:04:32,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:04:32,592 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:32,592 INFO L82 PathProgramCache]: Analyzing trace with hash -941720114, now seen corresponding path program 1 times [2020-10-27 05:04:32,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:32,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898551707] [2020-10-27 05:04:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:37,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:04:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:38,335 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:38,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:38,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:38,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:38,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:04:38,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:38,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:04:38,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898551707] [2020-10-27 05:04:38,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:38,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:38,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332956419] [2020-10-27 05:04:38,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:38,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:38,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:38,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:38,439 INFO L87 Difference]: Start difference. First operand 144915 states and 228197 transitions. Second operand 5 states. [2020-10-27 05:04:52,967 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 283