/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:58:01,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:58:01,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:58:01,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:58:01,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:58:01,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:58:01,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:58:01,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:58:01,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:58:01,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:58:01,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:58:01,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:58:01,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:58:01,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:58:01,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:58:01,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:58:01,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:58:01,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:58:01,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:58:01,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:58:01,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:58:01,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:58:01,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:58:01,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:58:01,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:58:01,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:58:01,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:58:01,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:58:01,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:58:01,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:58:01,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:58:01,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:58:01,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:58:01,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:58:01,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:58:01,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:58:01,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:58:01,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:58:01,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:58:01,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:58:01,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:58:01,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:58:01,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:58:01,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:58:01,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:58:01,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:58:01,815 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:58:01,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:58:01,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:58:01,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:58:01,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:58:01,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:58:01,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:58:01,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:58:01,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:58:01,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:58:01,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:58:01,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:58:01,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:58:01,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:58:01,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:58:01,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:58:01,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:58:01,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:01,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:58:01,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:58:01,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:58:01,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:58:01,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:58:01,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:58:01,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:58:01,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:58:02,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:58:02,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:58:02,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:58:02,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:58:02,259 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:58:02,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:58:02,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa69fa037/437dcac5af5449ca8e6399536a904781/FLAGb303104d7 [2020-10-29 13:58:03,113 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:58:03,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:58:03,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa69fa037/437dcac5af5449ca8e6399536a904781/FLAGb303104d7 [2020-10-29 13:58:03,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa69fa037/437dcac5af5449ca8e6399536a904781 [2020-10-29 13:58:03,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:58:03,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:58:03,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:03,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:58:03,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:58:03,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a1e375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:03, skipping insertion in model container [2020-10-29 13:58:03,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:03" (1/1) ... [2020-10-29 13:58:03,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:58:03,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:58:04,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:04,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:58:04,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:04,381 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:58:04,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04 WrapperNode [2020-10-29 13:58:04,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:04,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:58:04,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:58:04,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:58:04,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... [2020-10-29 13:58:04,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:58:04,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:58:04,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:58:04,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:58:04,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:04,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:58:04,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:58:04,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:58:04,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:58:04,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:58:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:58:04,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:58:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:58:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:58:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:58:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:58:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:58:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:58:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:58:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:58:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:58:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:58:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:58:06,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:58:06,203 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:58:06,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:06 BoogieIcfgContainer [2020-10-29 13:58:06,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:58:06,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:58:06,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:58:06,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:58:06,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:58:03" (1/3) ... [2020-10-29 13:58:06,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:06, skipping insertion in model container [2020-10-29 13:58:06,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:04" (2/3) ... [2020-10-29 13:58:06,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:06, skipping insertion in model container [2020-10-29 13:58:06,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:06" (3/3) ... [2020-10-29 13:58:06,215 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:58:06,228 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:58:06,234 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:58:06,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:58:06,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:58:06,283 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:58:06,283 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:58:06,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:58:06,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:58:06,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:58:06,284 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:58:06,284 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:58:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-29 13:58:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 13:58:06,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:06,328 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] [2020-10-29 13:58:06,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:06,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1599261146, now seen corresponding path program 1 times [2020-10-29 13:58:06,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:06,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216289779] [2020-10-29 13:58:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:08,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:11,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:11,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 13:58:11,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:58:11,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:58:11,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:11,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:58:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:58:11,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:58:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:58:12,458 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:12,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:12,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:58:12,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:12,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:12,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:58:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:12,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216289779] [2020-10-29 13:58:12,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:12,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:58:12,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573361878] [2020-10-29 13:58:12,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:58:12,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:12,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:58:12,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:58:12,622 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-29 13:58:13,089 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:58:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:15,173 INFO L93 Difference]: Finished difference Result 691 states and 1190 transitions. [2020-10-29 13:58:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:58:15,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-29 13:58:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:15,198 INFO L225 Difference]: With dead ends: 691 [2020-10-29 13:58:15,199 INFO L226 Difference]: Without dead ends: 557 [2020-10-29 13:58:15,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-29 13:58:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2020-10-29 13:58:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-29 13:58:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 829 transitions. [2020-10-29 13:58:15,310 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 829 transitions. Word has length 154 [2020-10-29 13:58:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:15,311 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 829 transitions. [2020-10-29 13:58:15,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:58:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 829 transitions. [2020-10-29 13:58:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 13:58:15,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:15,317 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] [2020-10-29 13:58:15,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:58:15,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:15,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2077220115, now seen corresponding path program 1 times [2020-10-29 13:58:15,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:15,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705813516] [2020-10-29 13:58:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:15,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:16,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:20,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:20,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 13:58:20,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:58:20,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 13:58:20,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:20,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:58:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 13:58:20,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 13:58:20,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:20,866 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:20,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:20,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:20,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:58:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:20,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:20,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705813516] [2020-10-29 13:58:20,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:20,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:58:20,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829939784] [2020-10-29 13:58:20,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:58:20,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:20,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:58:20,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:58:20,974 INFO L87 Difference]: Start difference. First operand 554 states and 829 transitions. Second operand 4 states. [2020-10-29 13:58:21,358 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:58:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:23,066 INFO L93 Difference]: Finished difference Result 1184 states and 1816 transitions. [2020-10-29 13:58:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:58:23,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-29 13:58:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:23,077 INFO L225 Difference]: With dead ends: 1184 [2020-10-29 13:58:23,078 INFO L226 Difference]: Without dead ends: 969 [2020-10-29 13:58:23,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-29 13:58:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 966. [2020-10-29 13:58:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-29 13:58:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1457 transitions. [2020-10-29 13:58:23,143 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1457 transitions. Word has length 154 [2020-10-29 13:58:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:23,144 INFO L481 AbstractCegarLoop]: Abstraction has 966 states and 1457 transitions. [2020-10-29 13:58:23,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:58:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1457 transitions. [2020-10-29 13:58:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 13:58:23,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:23,150 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] [2020-10-29 13:58:23,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:58:23,151 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash -238738614, now seen corresponding path program 1 times [2020-10-29 13:58:23,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:23,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289627607] [2020-10-29 13:58:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:28,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 13:58:28,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:58:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:58:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:28,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:28,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 13:58:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:28,848 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:28,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:28,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:58:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:28,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:29,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289627607] [2020-10-29 13:58:29,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:29,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:29,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070795483] [2020-10-29 13:58:29,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:29,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:29,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:29,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:29,097 INFO L87 Difference]: Start difference. First operand 966 states and 1457 transitions. Second operand 5 states. [2020-10-29 13:58:31,260 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:58:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:32,346 INFO L93 Difference]: Finished difference Result 2801 states and 4213 transitions. [2020-10-29 13:58:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:32,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 13:58:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:32,359 INFO L225 Difference]: With dead ends: 2801 [2020-10-29 13:58:32,359 INFO L226 Difference]: Without dead ends: 1858 [2020-10-29 13:58:32,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-10-29 13:58:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1855. [2020-10-29 13:58:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1855 states. [2020-10-29 13:58:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2770 transitions. [2020-10-29 13:58:32,465 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2770 transitions. Word has length 154 [2020-10-29 13:58:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:32,466 INFO L481 AbstractCegarLoop]: Abstraction has 1855 states and 2770 transitions. [2020-10-29 13:58:32,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2770 transitions. [2020-10-29 13:58:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 13:58:32,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:32,471 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] [2020-10-29 13:58:32,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:58:32,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash -811763373, now seen corresponding path program 1 times [2020-10-29 13:58:32,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:32,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021374337] [2020-10-29 13:58:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:37,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:37,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 13:58:37,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:58:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:58:37,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:37,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:37,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:58:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:38,031 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:38,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:38,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:58:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:38,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:38,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021374337] [2020-10-29 13:58:38,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:38,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:38,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484212191] [2020-10-29 13:58:38,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:38,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:38,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:38,180 INFO L87 Difference]: Start difference. First operand 1855 states and 2770 transitions. Second operand 5 states. [2020-10-29 13:58:40,645 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:58:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:41,962 INFO L93 Difference]: Finished difference Result 5371 states and 8010 transitions. [2020-10-29 13:58:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:41,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-29 13:58:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:41,983 INFO L225 Difference]: With dead ends: 5371 [2020-10-29 13:58:41,983 INFO L226 Difference]: Without dead ends: 3588 [2020-10-29 13:58:41,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2020-10-29 13:58:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3585. [2020-10-29 13:58:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3585 states. [2020-10-29 13:58:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 5299 transitions. [2020-10-29 13:58:42,256 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 5299 transitions. Word has length 155 [2020-10-29 13:58:42,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:42,256 INFO L481 AbstractCegarLoop]: Abstraction has 3585 states and 5299 transitions. [2020-10-29 13:58:42,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 5299 transitions. [2020-10-29 13:58:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 13:58:42,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:42,263 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] [2020-10-29 13:58:42,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:58:42,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:42,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:42,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1638722706, now seen corresponding path program 1 times [2020-10-29 13:58:42,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:42,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376551938] [2020-10-29 13:58:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:47,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:47,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 13:58:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:58:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:58:47,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:47,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:58:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:47,736 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:47,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:47,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:47,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:58:47,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:47,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:47,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:47,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376551938] [2020-10-29 13:58:47,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:47,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:47,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792466995] [2020-10-29 13:58:47,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:47,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:47,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:47,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:47,831 INFO L87 Difference]: Start difference. First operand 3585 states and 5299 transitions. Second operand 5 states. [2020-10-29 13:58:50,053 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:58:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:51,281 INFO L93 Difference]: Finished difference Result 10456 states and 15399 transitions. [2020-10-29 13:58:51,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:51,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 13:58:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:51,321 INFO L225 Difference]: With dead ends: 10456 [2020-10-29 13:58:51,321 INFO L226 Difference]: Without dead ends: 6901 [2020-10-29 13:58:51,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2020-10-29 13:58:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 6898. [2020-10-29 13:58:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6898 states. [2020-10-29 13:58:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 10056 transitions. [2020-10-29 13:58:51,809 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 10056 transitions. Word has length 156 [2020-10-29 13:58:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:51,810 INFO L481 AbstractCegarLoop]: Abstraction has 6898 states and 10056 transitions. [2020-10-29 13:58:51,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 10056 transitions. [2020-10-29 13:58:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 13:58:51,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:51,823 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] [2020-10-29 13:58:51,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:58:51,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:51,824 INFO L82 PathProgramCache]: Analyzing trace with hash -481450032, now seen corresponding path program 1 times [2020-10-29 13:58:51,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:51,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045866015] [2020-10-29 13:58:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 13:58:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:58:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 13:58:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:56,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 13:58:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:57,446 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:57,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:57,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:58:57,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:57,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:57,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045866015] [2020-10-29 13:58:57,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:57,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:57,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836412230] [2020-10-29 13:58:57,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:57,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:57,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:57,559 INFO L87 Difference]: Start difference. First operand 6898 states and 10056 transitions. Second operand 5 states. [2020-10-29 13:59:00,137 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:01,705 INFO L93 Difference]: Finished difference Result 20148 states and 29280 transitions. [2020-10-29 13:59:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:01,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 13:59:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:01,771 INFO L225 Difference]: With dead ends: 20148 [2020-10-29 13:59:01,771 INFO L226 Difference]: Without dead ends: 13325 [2020-10-29 13:59:01,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13325 states. [2020-10-29 13:59:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13325 to 13322. [2020-10-29 13:59:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13322 states. [2020-10-29 13:59:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13322 states to 13322 states and 19186 transitions. [2020-10-29 13:59:02,838 INFO L78 Accepts]: Start accepts. Automaton has 13322 states and 19186 transitions. Word has length 157 [2020-10-29 13:59:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:02,839 INFO L481 AbstractCegarLoop]: Abstraction has 13322 states and 19186 transitions. [2020-10-29 13:59:02,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 13322 states and 19186 transitions. [2020-10-29 13:59:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 13:59:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:02,860 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] [2020-10-29 13:59:02,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:59:02,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 571463149, now seen corresponding path program 1 times [2020-10-29 13:59:02,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:02,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378302507] [2020-10-29 13:59:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:06,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:06,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 13:59:06,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:59:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3533 [2020-10-29 13:59:06,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:06,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:59:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:06,860 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:59:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:06,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:06,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:06,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:59:06,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:06,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:06,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378302507] [2020-10-29 13:59:06,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:06,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:06,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787439349] [2020-10-29 13:59:06,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:06,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:06,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:06,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:06,930 INFO L87 Difference]: Start difference. First operand 13322 states and 19186 transitions. Second operand 5 states. [2020-10-29 13:59:09,626 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:11,173 INFO L93 Difference]: Finished difference Result 36283 states and 52001 transitions. [2020-10-29 13:59:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:11,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 13:59:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:11,315 INFO L225 Difference]: With dead ends: 36283 [2020-10-29 13:59:11,315 INFO L226 Difference]: Without dead ends: 23064 [2020-10-29 13:59:11,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23064 states. [2020-10-29 13:59:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23064 to 23061. [2020-10-29 13:59:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23061 states. [2020-10-29 13:59:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23061 states to 23061 states and 32649 transitions. [2020-10-29 13:59:12,637 INFO L78 Accepts]: Start accepts. Automaton has 23061 states and 32649 transitions. Word has length 158 [2020-10-29 13:59:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:12,638 INFO L481 AbstractCegarLoop]: Abstraction has 23061 states and 32649 transitions. [2020-10-29 13:59:12,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 23061 states and 32649 transitions. [2020-10-29 13:59:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 13:59:12,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:12,675 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] [2020-10-29 13:59:12,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:59:12,675 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:12,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1991289233, now seen corresponding path program 1 times [2020-10-29 13:59:12,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:12,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065145894] [2020-10-29 13:59:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:59:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:14,121 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:59:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:14,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065145894] [2020-10-29 13:59:14,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:14,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:14,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707234149] [2020-10-29 13:59:14,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:14,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:14,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:14,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:14,185 INFO L87 Difference]: Start difference. First operand 23061 states and 32649 transitions. Second operand 5 states. [2020-10-29 13:59:17,217 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:59:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:19,285 INFO L93 Difference]: Finished difference Result 62961 states and 88647 transitions. [2020-10-29 13:59:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:19,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-29 13:59:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:19,375 INFO L225 Difference]: With dead ends: 62961 [2020-10-29 13:59:19,375 INFO L226 Difference]: Without dead ends: 39916 [2020-10-29 13:59:19,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39916 states. [2020-10-29 13:59:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39916 to 39913. [2020-10-29 13:59:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39913 states. [2020-10-29 13:59:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39913 states to 39913 states and 55478 transitions. [2020-10-29 13:59:22,205 INFO L78 Accepts]: Start accepts. Automaton has 39913 states and 55478 transitions. Word has length 159 [2020-10-29 13:59:22,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:22,205 INFO L481 AbstractCegarLoop]: Abstraction has 39913 states and 55478 transitions. [2020-10-29 13:59:22,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 39913 states and 55478 transitions. [2020-10-29 13:59:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 13:59:22,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:22,244 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] [2020-10-29 13:59:22,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:59:22,245 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:22,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2127015123, now seen corresponding path program 1 times [2020-10-29 13:59:22,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:22,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267564397] [2020-10-29 13:59:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 13:59:22,292 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 13:59:22,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 13:59:22,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:59:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 01:59:22 BoogieIcfgContainer [2020-10-29 13:59:22,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 13:59:22,350 INFO L168 Benchmark]: Toolchain (without parser) took 78947.30 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 125.2 MB in the beginning and 1.1 GB in the end (delta: -947.5 MB). Peak memory consumption was 702.8 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:22,351 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 13:59:22,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 972.38 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 128.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:22,352 INFO L168 Benchmark]: Boogie Preprocessor took 102.83 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 123.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:22,353 INFO L168 Benchmark]: RCFGBuilder took 1718.99 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 68.9 MB in the end (delta: 54.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:22,354 INFO L168 Benchmark]: TraceAbstraction took 76140.89 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 68.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 645.6 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:22,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 972.38 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 128.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.83 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 123.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1718.99 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 68.9 MB in the end (delta: 54.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76140.89 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 68.9 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 645.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_2426; [L78] int __return_2551; [L81] int main__c1; [L82] int main__i2; [L83] main__c1 = 0 [L84] ep12 = __VERIFIER_nondet_bool() [L85] ep13 = __VERIFIER_nondet_bool() [L86] ep21 = __VERIFIER_nondet_bool() [L87] ep23 = __VERIFIER_nondet_bool() [L88] ep31 = __VERIFIER_nondet_bool() [L89] ep32 = __VERIFIER_nondet_bool() [L90] id1 = __VERIFIER_nondet_char() [L91] r1 = __VERIFIER_nondet_uchar() [L92] st1 = __VERIFIER_nondet_char() [L93] nl1 = __VERIFIER_nondet_char() [L94] m1 = __VERIFIER_nondet_char() [L95] max1 = __VERIFIER_nondet_char() [L96] mode1 = __VERIFIER_nondet_bool() [L97] newmax1 = __VERIFIER_nondet_bool() [L98] id2 = __VERIFIER_nondet_char() [L99] r2 = __VERIFIER_nondet_uchar() [L100] st2 = __VERIFIER_nondet_char() [L101] nl2 = __VERIFIER_nondet_char() [L102] m2 = __VERIFIER_nondet_char() [L103] max2 = __VERIFIER_nondet_char() [L104] mode2 = __VERIFIER_nondet_bool() [L105] newmax2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L113] newmax3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2456] COND FALSE !(!(init__r131 == 0)) [L2472] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2433] COND FALSE !(!(init__r121 == 0)) [L2449] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2410] COND FALSE !(!(init__r231 == 0)) [L2426] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2387] COND FALSE !(!(init__r211 == 0)) [L2403] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2364] COND FALSE !(!(init__r321 == 0)) [L2380] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2341] COND FALSE !(!(init__r311 == 0)) [L2357] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] COND TRUE !(newmax1 == 0) [L214] COND TRUE !(newmax2 == 0) [L216] COND TRUE !(newmax3 == 0) [L218] init__tmp___5 = 1 [L219] __return_1873 = init__tmp___5 [L220] main__i2 = __return_1873 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L237] _Bool node1__newmax; [L238] node1__newmax = 0 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND FALSE !(!(ep12 == 0)) [L260] COND FALSE !(!(ep13 == 0)) [L273] mode1 = 1 [L275] _Bool node2__newmax; [L276] node2__newmax = 0 [L277] COND FALSE !(!(mode2 == 0)) [L283] COND TRUE ((int)r2) < 2 [L285] COND FALSE !(!(ep21 == 0)) [L298] COND FALSE !(!(ep23 == 0)) [L311] mode2 = 1 [L313] _Bool node3__newmax; [L314] node3__newmax = 0 [L315] COND FALSE !(!(mode3 == 0)) [L321] COND TRUE ((int)r3) < 2 [L323] COND FALSE !(!(ep31 == 0)) [L336] COND FALSE !(!(ep32 == 0)) [L349] mode3 = 1 [L350] p12_old = p12_new [L351] p12_new = nomsg [L352] p13_old = p13_new [L353] p13_new = nomsg [L354] p21_old = p21_new [L355] p21_new = nomsg [L356] p23_old = p23_new [L357] p23_new = nomsg [L358] p31_old = p31_new [L359] p31_new = nomsg [L360] p32_old = p32_new [L361] p32_new = nomsg [L363] int check__tmp; [L364] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L366] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L368] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L370] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L372] COND FALSE !(((int)r1) >= 2) [L378] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L380] COND TRUE ((int)r1) < 2 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] check__tmp = 1 [L393] __return_2019 = check__tmp [L394] main__c1 = __return_2019 [L396] _Bool __tmp_1; [L397] __tmp_1 = main__c1 [L398] _Bool assert__arg; [L399] assert__arg = __tmp_1 [L400] COND FALSE !(assert__arg == 0) [L407] _Bool node1__newmax; [L408] node1__newmax = 0 [L409] COND TRUE !(mode1 == 0) [L411] COND FALSE !(r1 == 255) [L417] r1 = r1 + 1 [L418] COND FALSE !(!(ep21 == 0)) [L427] COND FALSE !(!(ep31 == 0)) [L436] newmax1 = node1__newmax [L437] COND FALSE !(((int)r1) == 2) [L443] mode1 = 0 [L445] _Bool node2__newmax; [L446] node2__newmax = 0 [L447] COND TRUE !(mode2 == 0) [L449] COND FALSE !(r2 == 255) [L455] r2 = r2 + 1 [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] COND FALSE !(r3 == 255) [L493] r3 = r3 + 1 [L494] COND FALSE !(!(ep13 == 0)) [L503] COND FALSE !(!(ep23 == 0)) [L512] newmax3 = node3__newmax [L513] COND FALSE !(((int)r3) == 2) [L519] mode3 = 0 [L520] p12_old = p12_new [L521] p12_new = nomsg [L522] p13_old = p13_new [L523] p13_new = nomsg [L524] p21_old = p21_new [L525] p21_new = nomsg [L526] p23_old = p23_new [L527] p23_new = nomsg [L528] p31_old = p31_new [L529] p31_new = nomsg [L530] p32_old = p32_new [L531] p32_new = nomsg [L533] int check__tmp; [L534] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L536] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L538] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L540] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L542] COND FALSE !(((int)r1) >= 2) [L548] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L550] COND TRUE ((int)r1) < 2 [L552] COND FALSE !(((int)r1) >= 2) [L558] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L560] COND TRUE ((int)r1) < 2 [L562] check__tmp = 1 [L563] __return_2152 = check__tmp [L564] main__c1 = __return_2152 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND FALSE !(assert__arg == 0) [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2288 = check__tmp [L734] main__c1 = __return_2288 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L747] _Bool node1__newmax; [L748] node1__newmax = 0 [L749] COND TRUE !(mode1 == 0) [L751] COND FALSE !(r1 == 255) [L757] r1 = r1 + 1 [L758] COND FALSE !(!(ep21 == 0)) [L767] COND FALSE !(!(ep31 == 0)) [L776] newmax1 = node1__newmax [L777] COND TRUE ((int)r1) == 2 [L779] COND TRUE ((int)max1) == ((int)id1) [L781] st1 = 1 [L783] mode1 = 0 [L785] _Bool node2__newmax; [L786] node2__newmax = 0 [L787] COND TRUE !(mode2 == 0) [L789] COND FALSE !(r2 == 255) [L795] r2 = r2 + 1 [L796] COND FALSE !(!(ep12 == 0)) [L805] COND FALSE !(!(ep32 == 0)) [L814] newmax2 = node2__newmax [L815] COND TRUE ((int)r2) == 2 [L817] COND TRUE ((int)max2) == ((int)id2) [L819] st2 = 1 [L821] mode2 = 0 [L823] _Bool node3__newmax; [L824] node3__newmax = 0 [L825] COND TRUE !(mode3 == 0) [L827] COND FALSE !(r3 == 255) [L833] r3 = r3 + 1 [L834] COND FALSE !(!(ep13 == 0)) [L843] COND FALSE !(!(ep23 == 0)) [L852] newmax3 = node3__newmax [L853] COND TRUE ((int)r3) == 2 [L855] COND TRUE ((int)max3) == ((int)id3) [L857] st3 = 1 [L859] mode3 = 0 [L860] p12_old = p12_new [L861] p12_new = nomsg [L862] p13_old = p13_new [L863] p13_new = nomsg [L864] p21_old = p21_new [L865] p21_new = nomsg [L866] p23_old = p23_new [L867] p23_new = nomsg [L868] p31_old = p31_new [L869] p31_new = nomsg [L870] p32_old = p32_new [L871] p32_new = nomsg [L873] int check__tmp; [L874] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1570] check__tmp = 0 [L902] __return_2426 = check__tmp [L903] main__c1 = __return_2426 [L906] _Bool __tmp_4; [L907] __tmp_4 = main__c1 [L908] _Bool assert__arg; [L909] assert__arg = __tmp_4 [L910] COND TRUE assert__arg == 0 [L912] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 351 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5867 SDtfs, 6591 SDslu, 3482 SDs, 0 SdLazy, 6402 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39913occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.9s InterpolantComputationTime, 1407 NumberOfCodeBlocks, 1407 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1239 ConstructedInterpolants, 0 QuantifiedInterpolants, 1288679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...