/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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:07:14,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:07:14,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:07:14,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:07:14,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:07:14,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:07:14,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:07:14,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:07:14,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:07:14,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:07:14,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:07:14,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:07:14,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:07:14,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:07:14,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:07:14,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:07:14,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:07:14,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:07:14,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:07:14,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:07:14,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:07:14,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:07:14,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:07:14,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:07:14,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:07:14,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:07:14,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:07:14,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:07:14,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:07:14,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:07:14,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:07:14,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:07:14,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:07:14,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:07:14,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:07:14,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:07:14,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:07:14,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:07:14,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:07:14,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:07:14,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:07:14,444 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 06:07:14,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:07:14,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:07:14,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:07:14,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:07:14,497 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:07:14,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:07:14,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:07:14,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:07:14,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:07:14,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:07:14,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:07:14,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:07:14,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:07:14,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:07:14,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:07:14,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:07:14,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:07:14,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:07:14,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:07:14,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:07:14,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:07:14,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:07:14,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:07:14,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:07:14,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:07:14,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:07:14,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:07:14,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:07:14,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:07:14,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:07:14,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:07:14,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:07:14,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:07:14,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:07:14,959 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:07:14,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:07:15,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b0557e7f/7149689a24494645a1510c539c79b5a0/FLAG9c9b0ac22 [2020-10-27 06:07:16,039 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:07:16,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:07:16,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b0557e7f/7149689a24494645a1510c539c79b5a0/FLAG9c9b0ac22 [2020-10-27 06:07:16,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b0557e7f/7149689a24494645a1510c539c79b5a0 [2020-10-27 06:07:16,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:07:16,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:07:16,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:16,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:07:16,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:07:16,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:16" (1/1) ... [2020-10-27 06:07:16,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f531488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:16, skipping insertion in model container [2020-10-27 06:07:16,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:16" (1/1) ... [2020-10-27 06:07:16,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:07:16,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:07:17,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:17,699 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:07:18,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:18,635 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:07:18,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18 WrapperNode [2020-10-27 06:07:18,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:18,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:07:18,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:07:18,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:07:18,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (1/1) ... [2020-10-27 06:07:18,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:07:18,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:07:18,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:07:18,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:07:18,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (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 06:07:19,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:07:19,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:07:19,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:07:19,014 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:07:19,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:07:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:07:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:07:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:07:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:07:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:07:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:07:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:07:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:07:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:07:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:07:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:07:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:07:23,967 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:07:23,968 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:07:23,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:23 BoogieIcfgContainer [2020-10-27 06:07:23,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:07:23,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:07:23,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:07:23,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:07:23,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:07:16" (1/3) ... [2020-10-27 06:07:23,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acb2803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:23, skipping insertion in model container [2020-10-27 06:07:23,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:18" (2/3) ... [2020-10-27 06:07:23,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acb2803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:23, skipping insertion in model container [2020-10-27 06:07:23,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:23" (3/3) ... [2020-10-27 06:07:23,984 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:07:23,999 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:07:24,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:07:24,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:07:24,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:07:24,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:07:24,071 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:07:24,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:07:24,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:07:24,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:07:24,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:07:24,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:07:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states. [2020-10-27 06:07:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 06:07:24,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:24,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:24,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash -864452950, now seen corresponding path program 1 times [2020-10-27 06:07:24,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:24,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562913836] [2020-10-27 06:07:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:29,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 06:07:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:07:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 06:07:29,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:29,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 06:07:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:07:32,034 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:07:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:32,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:32,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:32,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 06:07:32,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:32,451 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 06:07:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562913836] [2020-10-27 06:07:32,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:32,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:32,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576434538] [2020-10-27 06:07:32,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:32,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:32,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:32,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:32,478 INFO L87 Difference]: Start difference. First operand 1001 states. Second operand 5 states. [2020-10-27 06:07:47,362 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:07:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:51,013 INFO L93 Difference]: Finished difference Result 2873 states and 5199 transitions. [2020-10-27 06:07:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:07:51,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 06:07:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:51,050 INFO L225 Difference]: With dead ends: 2873 [2020-10-27 06:07:51,050 INFO L226 Difference]: Without dead ends: 1907 [2020-10-27 06:07:51,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-10-27 06:07:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1816. [2020-10-27 06:07:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-10-27 06:07:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2778 transitions. [2020-10-27 06:07:51,275 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2778 transitions. Word has length 321 [2020-10-27 06:07:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:51,277 INFO L481 AbstractCegarLoop]: Abstraction has 1816 states and 2778 transitions. [2020-10-27 06:07:51,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2778 transitions. [2020-10-27 06:07:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 06:07:51,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:51,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:51,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:07:51,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1278367721, now seen corresponding path program 1 times [2020-10-27 06:07:51,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:51,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128973776] [2020-10-27 06:07:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:51,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:51,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:56,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:56,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 06:07:56,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:07:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 06:07:56,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 06:07:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:07:58,418 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:07:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:58,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:58,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:07:58,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:58,728 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 06:07:58,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128973776] [2020-10-27 06:07:58,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:58,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:58,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372567782] [2020-10-27 06:07:58,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:58,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:58,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:58,742 INFO L87 Difference]: Start difference. First operand 1816 states and 2778 transitions. Second operand 5 states. [2020-10-27 06:08:10,449 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:13,954 INFO L93 Difference]: Finished difference Result 5378 states and 8219 transitions. [2020-10-27 06:08:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:13,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 06:08:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:13,976 INFO L225 Difference]: With dead ends: 5378 [2020-10-27 06:08:13,977 INFO L226 Difference]: Without dead ends: 3575 [2020-10-27 06:08:13,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2020-10-27 06:08:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3488. [2020-10-27 06:08:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3488 states. [2020-10-27 06:08:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 5312 transitions. [2020-10-27 06:08:14,145 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 5312 transitions. Word has length 323 [2020-10-27 06:08:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:14,145 INFO L481 AbstractCegarLoop]: Abstraction has 3488 states and 5312 transitions. [2020-10-27 06:08:14,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 5312 transitions. [2020-10-27 06:08:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 06:08:14,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:14,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:14,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:08:14,157 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:14,158 INFO L82 PathProgramCache]: Analyzing trace with hash 400085818, now seen corresponding path program 1 times [2020-10-27 06:08:14,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:14,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341111864] [2020-10-27 06:08:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:19,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 06:08:19,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:08:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 06:08:19,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 06:08:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:08:21,090 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:08:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:21,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:21,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:21,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 06:08:21,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:21,324 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 06:08:21,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341111864] [2020-10-27 06:08:21,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:21,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:21,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456277703] [2020-10-27 06:08:21,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:21,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:21,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:21,328 INFO L87 Difference]: Start difference. First operand 3488 states and 5312 transitions. Second operand 5 states. [2020-10-27 06:08:33,533 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:36,893 INFO L93 Difference]: Finished difference Result 10170 states and 15433 transitions. [2020-10-27 06:08:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:36,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 06:08:36,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:36,930 INFO L225 Difference]: With dead ends: 10170 [2020-10-27 06:08:36,930 INFO L226 Difference]: Without dead ends: 6795 [2020-10-27 06:08:36,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6795 states. [2020-10-27 06:08:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6795 to 6701. [2020-10-27 06:08:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6701 states. [2020-10-27 06:08:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6701 states to 6701 states and 10129 transitions. [2020-10-27 06:08:37,295 INFO L78 Accepts]: Start accepts. Automaton has 6701 states and 10129 transitions. Word has length 325 [2020-10-27 06:08:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:37,296 INFO L481 AbstractCegarLoop]: Abstraction has 6701 states and 10129 transitions. [2020-10-27 06:08:37,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6701 states and 10129 transitions. [2020-10-27 06:08:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:08:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:37,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:37,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:08:37,313 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1727955658, now seen corresponding path program 1 times [2020-10-27 06:08:37,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:37,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991539973] [2020-10-27 06:08:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:42,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:42,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:08:42,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:08:42,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 06:08:42,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:42,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 06:08:42,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:44,430 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:08:44,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:44,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:44,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:44,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 06:08:44,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:44,714 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 06:08:44,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991539973] [2020-10-27 06:08:44,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:44,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:44,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230168890] [2020-10-27 06:08:44,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:44,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:44,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:44,717 INFO L87 Difference]: Start difference. First operand 6701 states and 10129 transitions. Second operand 5 states. [2020-10-27 06:08:58,212 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:02,040 INFO L93 Difference]: Finished difference Result 19668 states and 29653 transitions. [2020-10-27 06:09:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:02,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:09:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:02,101 INFO L225 Difference]: With dead ends: 19668 [2020-10-27 06:09:02,101 INFO L226 Difference]: Without dead ends: 13214 [2020-10-27 06:09:02,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2020-10-27 06:09:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 13120. [2020-10-27 06:09:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13120 states. [2020-10-27 06:09:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13120 states to 13120 states and 19723 transitions. [2020-10-27 06:09:02,875 INFO L78 Accepts]: Start accepts. Automaton has 13120 states and 19723 transitions. Word has length 327 [2020-10-27 06:09:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:02,876 INFO L481 AbstractCegarLoop]: Abstraction has 13120 states and 19723 transitions. [2020-10-27 06:09:02,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13120 states and 19723 transitions. [2020-10-27 06:09:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:09:02,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:02,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:02,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:09:02,905 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:02,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1034358400, now seen corresponding path program 1 times [2020-10-27 06:09:02,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:02,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140800119] [2020-10-27 06:09:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:03,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:08,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:09:08,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:09:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 06:09:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 06:09:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:09:09,996 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:09:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:10,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:10,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:09:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:10,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140800119] [2020-10-27 06:09:10,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:10,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:10,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396775156] [2020-10-27 06:09:10,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:10,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:10,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:10,167 INFO L87 Difference]: Start difference. First operand 13120 states and 19723 transitions. Second operand 5 states. [2020-10-27 06:09:22,590 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:26,451 INFO L93 Difference]: Finished difference Result 38620 states and 57891 transitions. [2020-10-27 06:09:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:26,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 06:09:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:26,510 INFO L225 Difference]: With dead ends: 38620 [2020-10-27 06:09:26,510 INFO L226 Difference]: Without dead ends: 25652 [2020-10-27 06:09:26,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25652 states. [2020-10-27 06:09:27,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25652 to 25596. [2020-10-27 06:09:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25596 states. [2020-10-27 06:09:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25596 states to 25596 states and 38116 transitions. [2020-10-27 06:09:27,880 INFO L78 Accepts]: Start accepts. Automaton has 25596 states and 38116 transitions. Word has length 329 [2020-10-27 06:09:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:27,881 INFO L481 AbstractCegarLoop]: Abstraction has 25596 states and 38116 transitions. [2020-10-27 06:09:27,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 25596 states and 38116 transitions. [2020-10-27 06:09:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:09:27,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:27,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:27,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:09:27,942 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:27,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash 931790127, now seen corresponding path program 1 times [2020-10-27 06:09:27,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:27,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533968656] [2020-10-27 06:09:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 06:09:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:34,845 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:09:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:35,018 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 06:09:35,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533968656] [2020-10-27 06:09:35,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:35,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:35,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880929581] [2020-10-27 06:09:35,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:35,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:35,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:35,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:35,021 INFO L87 Difference]: Start difference. First operand 25596 states and 38116 transitions. Second operand 5 states. [2020-10-27 06:09:48,705 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:52,761 INFO L93 Difference]: Finished difference Result 75545 states and 112291 transitions. [2020-10-27 06:09:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:52,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-27 06:09:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:52,875 INFO L225 Difference]: With dead ends: 75545 [2020-10-27 06:09:52,875 INFO L226 Difference]: Without dead ends: 50206 [2020-10-27 06:09:52,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50206 states. [2020-10-27 06:09:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50206 to 50078. [2020-10-27 06:09:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50078 states. [2020-10-27 06:09:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50078 states to 50078 states and 74027 transitions. [2020-10-27 06:09:55,634 INFO L78 Accepts]: Start accepts. Automaton has 50078 states and 74027 transitions. Word has length 331 [2020-10-27 06:09:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:55,635 INFO L481 AbstractCegarLoop]: Abstraction has 50078 states and 74027 transitions. [2020-10-27 06:09:55,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 50078 states and 74027 transitions. [2020-10-27 06:09:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 06:09:55,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:55,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:55,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:09:55,835 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1042168114, now seen corresponding path program 1 times [2020-10-27 06:09:55,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:55,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605229670] [2020-10-27 06:09:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:00,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:00,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 06:10:00,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:10:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 06:10:00,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 06:10:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:02,660 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:10:02,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:02,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:10:02,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:02,824 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 06:10:02,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605229670] [2020-10-27 06:10:02,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:02,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:02,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670835458] [2020-10-27 06:10:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:02,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:02,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:02,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:02,826 INFO L87 Difference]: Start difference. First operand 50078 states and 74027 transitions. Second operand 5 states. [2020-10-27 06:10:17,992 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:10:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:22,535 INFO L93 Difference]: Finished difference Result 146980 states and 216777 transitions. [2020-10-27 06:10:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:22,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-27 06:10:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:22,732 INFO L225 Difference]: With dead ends: 146980 [2020-10-27 06:10:22,732 INFO L226 Difference]: Without dead ends: 97900 [2020-10-27 06:10:22,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97900 states. [2020-10-27 06:10:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97900 to 97772. [2020-10-27 06:10:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97772 states. [2020-10-27 06:10:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97772 states to 97772 states and 143183 transitions. [2020-10-27 06:10:27,757 INFO L78 Accepts]: Start accepts. Automaton has 97772 states and 143183 transitions. Word has length 333 [2020-10-27 06:10:27,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:27,758 INFO L481 AbstractCegarLoop]: Abstraction has 97772 states and 143183 transitions. [2020-10-27 06:10:27,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 97772 states and 143183 transitions. [2020-10-27 06:10:27,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-27 06:10:27,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:27,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:27,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:10:27,855 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:27,856 INFO L82 PathProgramCache]: Analyzing trace with hash 129288391, now seen corresponding path program 1 times [2020-10-27 06:10:27,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:27,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714485966] [2020-10-27 06:10:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:32,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:32,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-27 06:10:32,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:10:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 06:10:32,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 06:10:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:34,722 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:10:34,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:10:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:34,924 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 06:10:34,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714485966] [2020-10-27 06:10:34,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:34,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:34,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459820158] [2020-10-27 06:10:34,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:34,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:34,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:34,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:34,933 INFO L87 Difference]: Start difference. First operand 97772 states and 143183 transitions. Second operand 5 states.