./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:39:21,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:39:21,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:39:21,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:39:21,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:39:21,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:39:21,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:39:21,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:39:21,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:39:21,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:39:21,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:39:21,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:39:21,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:39:21,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:39:21,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:39:21,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:39:21,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:39:21,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:39:21,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:39:21,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:39:21,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:39:21,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:39:21,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:39:21,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:39:21,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:39:21,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:39:21,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:39:21,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:39:21,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:39:21,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:39:21,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:39:21,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:39:21,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:39:21,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:39:21,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:39:21,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:39:21,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:39:21,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:39:21,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:39:21,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:39:21,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:39:21,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:39:21,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:39:21,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:39:21,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:39:21,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:39:21,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:39:21,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:39:21,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:39:21,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:39:21,792 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:39:21,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:39:21,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:39:21,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:39:21,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:39:21,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:39:21,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:39:21,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:39:21,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:39:21,794 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:39:21,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:39:21,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:39:21,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:39:21,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:39:21,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:39:21,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:39:21,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:39:21,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:39:21,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:39:21,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:39:21,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:39:21,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:39:21,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:39:21,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:39:21,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:39:21,802 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 [2022-02-20 19:39:22,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:39:22,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:39:22,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:39:22,040 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:39:22,040 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:39:22,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-02-20 19:39:22,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0d28eda/ee9b204d76854b8fa9ffdeadd78e0726/FLAG67a41ef41 [2022-02-20 19:39:22,800 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:39:22,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-02-20 19:39:22,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0d28eda/ee9b204d76854b8fa9ffdeadd78e0726/FLAG67a41ef41 [2022-02-20 19:39:22,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0d28eda/ee9b204d76854b8fa9ffdeadd78e0726 [2022-02-20 19:39:22,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:39:22,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:39:22,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:39:22,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:39:22,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:39:22,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:39:22" (1/1) ... [2022-02-20 19:39:22,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736f7c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:22, skipping insertion in model container [2022-02-20 19:39:22,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:39:22" (1/1) ... [2022-02-20 19:39:22,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:39:23,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:39:23,359 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2022-02-20 19:39:23,378 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2022-02-20 19:39:24,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:39:24,064 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:39:24,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2022-02-20 19:39:24,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2022-02-20 19:39:24,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:39:24,534 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:39:24,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24 WrapperNode [2022-02-20 19:39:24,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:39:24,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:39:24,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:39:24,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:39:24,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:24,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:24,993 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4976 [2022-02-20 19:39:24,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:39:24,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:39:24,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:39:24,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:39:25,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:39:25,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:39:25,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:39:25,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:39:25,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (1/1) ... [2022-02-20 19:39:25,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:39:25,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:39:25,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:39:25,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:39:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:39:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:39:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:39:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:39:25,655 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:39:25,657 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:39:33,477 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:39:33,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:39:33,492 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-20 19:39:33,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:39:33 BoogieIcfgContainer [2022-02-20 19:39:33,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:39:33,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:39:33,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:39:33,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:39:33,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:39:22" (1/3) ... [2022-02-20 19:39:33,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc8dd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:39:33, skipping insertion in model container [2022-02-20 19:39:33,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:39:24" (2/3) ... [2022-02-20 19:39:33,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc8dd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:39:33, skipping insertion in model container [2022-02-20 19:39:33,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:39:33" (3/3) ... [2022-02-20 19:39:33,508 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-02-20 19:39:33,512 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:39:33,513 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:39:33,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:39:33,562 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:39:33,562 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:39:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-20 19:39:33,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:39:33,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:39:33,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:39:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:39:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1728623957, now seen corresponding path program 1 times [2022-02-20 19:39:33,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:39:33,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750935867] [2022-02-20 19:39:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:39:33,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:39:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:39:33,849 INFO L290 TraceCheckUtils]: 0: Hoare triple {883#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,850 INFO L290 TraceCheckUtils]: 1: Hoare triple {885#(<= 15 ~a24~0)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,851 INFO L290 TraceCheckUtils]: 2: Hoare triple {885#(<= 15 ~a24~0)} assume !(0 != main_#t~nondet37#1);havoc main_#t~nondet37#1;assume { :begin_inline_main2 } true;havoc main2_#res#1;havoc main2_#t~nondet35#1, main2_#t~ret36#1, main2_~input~0#1, main2_~output~0#1;main2_~output~0#1 := -1; {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,852 INFO L290 TraceCheckUtils]: 3: Hoare triple {885#(<= 15 ~a24~0)} assume !false;havoc main2_~input~0#1;assume -2147483648 <= main2_#t~nondet35#1 && main2_#t~nondet35#1 <= 2147483647;main2_~input~0#1 := main2_#t~nondet35#1;havoc main2_#t~nondet35#1; {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,852 INFO L290 TraceCheckUtils]: 4: Hoare triple {885#(<= 15 ~a24~0)} assume !(((((1 != main2_~input~0#1 && 2 != main2_~input~0#1) && 3 != main2_~input~0#1) && 4 != main2_~input~0#1) && 5 != main2_~input~0#1) && 6 != main2_~input~0#1);assume { :begin_inline_calculate_output } true;calculate_output_#in~input#1 := main2_~input~0#1;havoc calculate_output_#res#1;havoc calculate_output_#t~ret32#1, calculate_output_~input#1;calculate_output_~input#1 := calculate_output_#in~input#1; {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,853 INFO L290 TraceCheckUtils]: 5: Hoare triple {885#(<= 15 ~a24~0)} assume !((((14 == ~a7~0 && ~a2~0 <= 189) && 111 < ~a17~0 && 255 >= ~a17~0) && 13 == ~a24~0) && 3 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,853 INFO L290 TraceCheckUtils]: 6: Hoare triple {885#(<= 15 ~a24~0)} assume !((((12 == ~a7~0 && ~a2~0 <= 189) && ~a17~0 <= -108) && 13 == ~a24~0) && 4 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,854 INFO L290 TraceCheckUtils]: 7: Hoare triple {885#(<= 15 ~a24~0)} assume !((((14 == ~a7~0 && ~a2~0 <= 189) && 111 < ~a17~0 && 255 >= ~a17~0) && 14 == ~a24~0) && 4 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,854 INFO L290 TraceCheckUtils]: 8: Hoare triple {885#(<= 15 ~a24~0)} assume !((((14 == ~a7~0 && ~a2~0 <= 189) && -108 < ~a17~0 && 111 >= ~a17~0) && 13 == ~a24~0) && 4 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,855 INFO L290 TraceCheckUtils]: 9: Hoare triple {885#(<= 15 ~a24~0)} assume !((((13 == ~a7~0 && ~a2~0 <= 189) && ~a17~0 <= -108) && 14 == ~a24~0) && 4 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,856 INFO L290 TraceCheckUtils]: 10: Hoare triple {885#(<= 15 ~a24~0)} assume !((((13 == ~a7~0 && ~a2~0 <= 189) && -108 < ~a17~0 && 111 >= ~a17~0) && 14 == ~a24~0) && 4 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,860 INFO L290 TraceCheckUtils]: 11: Hoare triple {885#(<= 15 ~a24~0)} assume !((((12 == ~a7~0 && ~a2~0 <= 189) && 255 < ~a17~0) && 14 == ~a24~0) && 3 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,861 INFO L290 TraceCheckUtils]: 12: Hoare triple {885#(<= 15 ~a24~0)} assume !((((14 == ~a7~0 && ~a2~0 <= 189) && ~a17~0 <= -108) && 13 == ~a24~0) && 4 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,861 INFO L290 TraceCheckUtils]: 13: Hoare triple {885#(<= 15 ~a24~0)} assume !((((14 == ~a7~0 && ~a2~0 <= 189) && 111 < ~a17~0 && 255 >= ~a17~0) && 14 == ~a24~0) && 3 == ~a5~0); {885#(<= 15 ~a24~0)} is VALID [2022-02-20 19:39:33,862 INFO L290 TraceCheckUtils]: 14: Hoare triple {885#(<= 15 ~a24~0)} assume (((13 == ~a7~0 && ~a2~0 <= 189) && ~a17~0 <= -108) && 13 == ~a24~0) && 3 == ~a5~0; {884#false} is VALID [2022-02-20 19:39:33,862 INFO L290 TraceCheckUtils]: 15: Hoare triple {884#false} assume !false; {884#false} is VALID [2022-02-20 19:39:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:39:33,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:39:33,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750935867] [2022-02-20 19:39:33,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750935867] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:39:33,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:39:33,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 19:39:33,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084349284] [2022-02-20 19:39:33,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:39:33,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-20 19:39:33,873 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:39:33,876 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:33,901 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:33,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:39:33,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:39:33,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:39:33,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:39:33,928 INFO L87 Difference]: Start difference. First operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:39,760 INFO L93 Difference]: Finished difference Result 2491 states and 4798 transitions. [2022-02-20 19:39:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:39:39,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-20 19:39:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:39:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4798 transitions. [2022-02-20 19:39:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4798 transitions. [2022-02-20 19:39:39,843 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 4798 transitions. [2022-02-20 19:39:43,625 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 4798 edges. 4798 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:43,846 INFO L225 Difference]: With dead ends: 2491 [2022-02-20 19:39:43,847 INFO L226 Difference]: Without dead ends: 1565 [2022-02-20 19:39:43,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:39:43,855 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 916 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-20 19:39:43,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 580 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-20 19:39:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-02-20 19:39:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-02-20 19:39:43,957 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:39:43,977 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1565 states. Second operand has 1565 states, 1563 states have (on average 1.6397952655150352) internal successors, (2563), 1564 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:43,980 INFO L74 IsIncluded]: Start isIncluded. First operand 1565 states. Second operand has 1565 states, 1563 states have (on average 1.6397952655150352) internal successors, (2563), 1564 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:43,984 INFO L87 Difference]: Start difference. First operand 1565 states. Second operand has 1565 states, 1563 states have (on average 1.6397952655150352) internal successors, (2563), 1564 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:44,089 INFO L93 Difference]: Finished difference Result 1565 states and 2563 transitions. [2022-02-20 19:39:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2563 transitions. [2022-02-20 19:39:44,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:44,100 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:44,104 INFO L74 IsIncluded]: Start isIncluded. First operand has 1565 states, 1563 states have (on average 1.6397952655150352) internal successors, (2563), 1564 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1565 states. [2022-02-20 19:39:44,106 INFO L87 Difference]: Start difference. First operand has 1565 states, 1563 states have (on average 1.6397952655150352) internal successors, (2563), 1564 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1565 states. [2022-02-20 19:39:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:44,218 INFO L93 Difference]: Finished difference Result 1565 states and 2563 transitions. [2022-02-20 19:39:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2563 transitions. [2022-02-20 19:39:44,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:44,222 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:44,222 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:39:44,222 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:39:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1563 states have (on average 1.6397952655150352) internal successors, (2563), 1564 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2563 transitions. [2022-02-20 19:39:44,345 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2563 transitions. Word has length 16 [2022-02-20 19:39:44,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:39:44,345 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 2563 transitions. [2022-02-20 19:39:44,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2563 transitions. [2022-02-20 19:39:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-20 19:39:44,347 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:39:44,349 INFO L514 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] [2022-02-20 19:39:44,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:39:44,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:39:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:39:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2022-02-20 19:39:44,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:39:44,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932762908] [2022-02-20 19:39:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:39:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:39:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:39:44,461 INFO L290 TraceCheckUtils]: 0: Hoare triple {8123#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {8123#true} is VALID [2022-02-20 19:39:44,461 INFO L290 TraceCheckUtils]: 1: Hoare triple {8123#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {8123#true} is VALID [2022-02-20 19:39:44,461 INFO L290 TraceCheckUtils]: 2: Hoare triple {8123#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {8123#true} is VALID [2022-02-20 19:39:44,462 INFO L290 TraceCheckUtils]: 3: Hoare triple {8123#true} assume !(0 == ~r1~0 % 256);init_~tmp~0#1 := 0; {8125#(= |ULTIMATE.start_init_~tmp~0#1| 0)} is VALID [2022-02-20 19:39:44,462 INFO L290 TraceCheckUtils]: 4: Hoare triple {8125#(= |ULTIMATE.start_init_~tmp~0#1| 0)} init_#res#1 := init_~tmp~0#1; {8126#(= |ULTIMATE.start_init_#res#1| 0)} is VALID [2022-02-20 19:39:44,464 INFO L290 TraceCheckUtils]: 5: Hoare triple {8126#(= |ULTIMATE.start_init_#res#1| 0)} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {8127#(= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)} is VALID [2022-02-20 19:39:44,464 INFO L290 TraceCheckUtils]: 6: Hoare triple {8127#(= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)} assume !(0 == assume_abort_if_not_~cond#1); {8124#false} is VALID [2022-02-20 19:39:44,464 INFO L290 TraceCheckUtils]: 7: Hoare triple {8124#false} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {8124#false} is VALID [2022-02-20 19:39:44,465 INFO L290 TraceCheckUtils]: 8: Hoare triple {8124#false} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {8124#false} is VALID [2022-02-20 19:39:44,465 INFO L290 TraceCheckUtils]: 9: Hoare triple {8124#false} assume !(0 != ~mode1~0 % 256); {8124#false} is VALID [2022-02-20 19:39:44,465 INFO L290 TraceCheckUtils]: 10: Hoare triple {8124#false} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {8124#false} is VALID [2022-02-20 19:39:44,465 INFO L290 TraceCheckUtils]: 11: Hoare triple {8124#false} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {8124#false} is VALID [2022-02-20 19:39:44,466 INFO L290 TraceCheckUtils]: 12: Hoare triple {8124#false} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {8124#false} is VALID [2022-02-20 19:39:44,466 INFO L290 TraceCheckUtils]: 13: Hoare triple {8124#false} assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; {8124#false} is VALID [2022-02-20 19:39:44,466 INFO L290 TraceCheckUtils]: 14: Hoare triple {8124#false} assume !(node2_~m2~0#1 != ~nomsg~0); {8124#false} is VALID [2022-02-20 19:39:44,466 INFO L290 TraceCheckUtils]: 15: Hoare triple {8124#false} ~mode2~0 := 0; {8124#false} is VALID [2022-02-20 19:39:44,467 INFO L290 TraceCheckUtils]: 16: Hoare triple {8124#false} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {8124#false} is VALID [2022-02-20 19:39:44,467 INFO L290 TraceCheckUtils]: 17: Hoare triple {8124#false} assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; {8124#false} is VALID [2022-02-20 19:39:44,467 INFO L290 TraceCheckUtils]: 18: Hoare triple {8124#false} assume !(node3_~m3~0#1 != ~nomsg~0); {8124#false} is VALID [2022-02-20 19:39:44,467 INFO L290 TraceCheckUtils]: 19: Hoare triple {8124#false} ~mode3~0 := 0; {8124#false} is VALID [2022-02-20 19:39:44,468 INFO L290 TraceCheckUtils]: 20: Hoare triple {8124#false} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {8124#false} is VALID [2022-02-20 19:39:44,468 INFO L290 TraceCheckUtils]: 21: Hoare triple {8124#false} assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0; {8124#false} is VALID [2022-02-20 19:39:44,468 INFO L290 TraceCheckUtils]: 22: Hoare triple {8124#false} check_#res#1 := check_~tmp~1#1; {8124#false} is VALID [2022-02-20 19:39:44,468 INFO L290 TraceCheckUtils]: 23: Hoare triple {8124#false} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {8124#false} is VALID [2022-02-20 19:39:44,469 INFO L290 TraceCheckUtils]: 24: Hoare triple {8124#false} assume 0 == assert_~arg#1 % 256; {8124#false} is VALID [2022-02-20 19:39:44,469 INFO L290 TraceCheckUtils]: 25: Hoare triple {8124#false} assume !false; {8124#false} is VALID [2022-02-20 19:39:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:39:44,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:39:44,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932762908] [2022-02-20 19:39:44,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932762908] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:39:44,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:39:44,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 19:39:44,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822830923] [2022-02-20 19:39:44,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:39:44,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-20 19:39:44,473 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:39:44,473 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:44,491 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:44,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 19:39:44,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:39:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 19:39:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 19:39:44,494 INFO L87 Difference]: Start difference. First operand 1565 states and 2563 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:48,828 INFO L93 Difference]: Finished difference Result 1607 states and 2626 transitions. [2022-02-20 19:39:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 19:39:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-20 19:39:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:39:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1599 transitions. [2022-02-20 19:39:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1599 transitions. [2022-02-20 19:39:48,846 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 1599 transitions. [2022-02-20 19:39:50,195 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1599 edges. 1599 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:50,271 INFO L225 Difference]: With dead ends: 1607 [2022-02-20 19:39:50,271 INFO L226 Difference]: Without dead ends: 1565 [2022-02-20 19:39:50,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-20 19:39:50,273 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 3 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:39:50,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:39:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-02-20 19:39:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-02-20 19:39:50,311 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:39:50,314 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1565 states. Second operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:50,317 INFO L74 IsIncluded]: Start isIncluded. First operand 1565 states. Second operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:50,320 INFO L87 Difference]: Start difference. First operand 1565 states. Second operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:50,426 INFO L93 Difference]: Finished difference Result 1565 states and 2547 transitions. [2022-02-20 19:39:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2022-02-20 19:39:50,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:50,429 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:50,432 INFO L74 IsIncluded]: Start isIncluded. First operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1565 states. [2022-02-20 19:39:50,434 INFO L87 Difference]: Start difference. First operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1565 states. [2022-02-20 19:39:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:50,548 INFO L93 Difference]: Finished difference Result 1565 states and 2547 transitions. [2022-02-20 19:39:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2022-02-20 19:39:50,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:50,551 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:50,551 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:39:50,551 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:39:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1563 states have (on average 1.6295585412667946) internal successors, (2547), 1564 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2547 transitions. [2022-02-20 19:39:50,665 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2547 transitions. Word has length 26 [2022-02-20 19:39:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:39:50,665 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 2547 transitions. [2022-02-20 19:39:50,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2022-02-20 19:39:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-20 19:39:50,667 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:39:50,667 INFO L514 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] [2022-02-20 19:39:50,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 19:39:50,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:39:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:39:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2022-02-20 19:39:50,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:39:50,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63704023] [2022-02-20 19:39:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:39:50,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:39:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:39:50,780 INFO L290 TraceCheckUtils]: 0: Hoare triple {14477#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {14477#true} is VALID [2022-02-20 19:39:50,780 INFO L290 TraceCheckUtils]: 1: Hoare triple {14477#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {14477#true} is VALID [2022-02-20 19:39:50,780 INFO L290 TraceCheckUtils]: 2: Hoare triple {14477#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 3: Hoare triple {14477#true} assume 0 == ~r1~0 % 256; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 4: Hoare triple {14477#true} assume ~id1~0 >= 0; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 5: Hoare triple {14477#true} assume 0 == ~st1~0; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 6: Hoare triple {14477#true} assume ~send1~0 == ~id1~0; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 7: Hoare triple {14477#true} assume 0 == ~mode1~0 % 256; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 8: Hoare triple {14477#true} assume ~id2~0 >= 0; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 9: Hoare triple {14477#true} assume 0 == ~st2~0; {14477#true} is VALID [2022-02-20 19:39:50,781 INFO L290 TraceCheckUtils]: 10: Hoare triple {14477#true} assume ~send2~0 == ~id2~0; {14477#true} is VALID [2022-02-20 19:39:50,783 INFO L290 TraceCheckUtils]: 11: Hoare triple {14477#true} assume 0 == ~mode2~0 % 256; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,784 INFO L290 TraceCheckUtils]: 12: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume ~id3~0 >= 0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,784 INFO L290 TraceCheckUtils]: 13: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume 0 == ~st3~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,785 INFO L290 TraceCheckUtils]: 14: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume ~send3~0 == ~id3~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,785 INFO L290 TraceCheckUtils]: 15: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume 0 == ~mode3~0 % 256; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,786 INFO L290 TraceCheckUtils]: 16: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume ~id1~0 != ~id2~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,787 INFO L290 TraceCheckUtils]: 17: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume ~id1~0 != ~id3~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,787 INFO L290 TraceCheckUtils]: 18: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,788 INFO L290 TraceCheckUtils]: 19: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} init_#res#1 := init_~tmp~0#1; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,788 INFO L290 TraceCheckUtils]: 20: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,789 INFO L290 TraceCheckUtils]: 21: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume !(0 == assume_abort_if_not_~cond#1); {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,789 INFO L290 TraceCheckUtils]: 22: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,790 INFO L290 TraceCheckUtils]: 23: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,790 INFO L290 TraceCheckUtils]: 24: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume !(0 != ~mode1~0 % 256); {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,791 INFO L290 TraceCheckUtils]: 25: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,791 INFO L290 TraceCheckUtils]: 26: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,792 INFO L290 TraceCheckUtils]: 27: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} is VALID [2022-02-20 19:39:50,792 INFO L290 TraceCheckUtils]: 28: Hoare triple {14479#(= (+ (* (- 256) (div ~mode2~0 256)) ~mode2~0) 0)} assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; {14478#false} is VALID [2022-02-20 19:39:50,792 INFO L290 TraceCheckUtils]: 29: Hoare triple {14478#false} assume !(node2_~m2~0#1 != ~nomsg~0); {14478#false} is VALID [2022-02-20 19:39:50,793 INFO L290 TraceCheckUtils]: 30: Hoare triple {14478#false} ~mode2~0 := 0; {14478#false} is VALID [2022-02-20 19:39:50,793 INFO L290 TraceCheckUtils]: 31: Hoare triple {14478#false} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {14478#false} is VALID [2022-02-20 19:39:50,793 INFO L290 TraceCheckUtils]: 32: Hoare triple {14478#false} assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; {14478#false} is VALID [2022-02-20 19:39:50,793 INFO L290 TraceCheckUtils]: 33: Hoare triple {14478#false} assume !(node3_~m3~0#1 != ~nomsg~0); {14478#false} is VALID [2022-02-20 19:39:50,793 INFO L290 TraceCheckUtils]: 34: Hoare triple {14478#false} ~mode3~0 := 0; {14478#false} is VALID [2022-02-20 19:39:50,794 INFO L290 TraceCheckUtils]: 35: Hoare triple {14478#false} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {14478#false} is VALID [2022-02-20 19:39:50,794 INFO L290 TraceCheckUtils]: 36: Hoare triple {14478#false} assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0; {14478#false} is VALID [2022-02-20 19:39:50,794 INFO L290 TraceCheckUtils]: 37: Hoare triple {14478#false} check_#res#1 := check_~tmp~1#1; {14478#false} is VALID [2022-02-20 19:39:50,794 INFO L290 TraceCheckUtils]: 38: Hoare triple {14478#false} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {14478#false} is VALID [2022-02-20 19:39:50,794 INFO L290 TraceCheckUtils]: 39: Hoare triple {14478#false} assume 0 == assert_~arg#1 % 256; {14478#false} is VALID [2022-02-20 19:39:50,794 INFO L290 TraceCheckUtils]: 40: Hoare triple {14478#false} assume !false; {14478#false} is VALID [2022-02-20 19:39:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:39:50,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:39:50,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63704023] [2022-02-20 19:39:50,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63704023] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:39:50,795 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:39:50,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:39:50,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54262053] [2022-02-20 19:39:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:39:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-20 19:39:50,796 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:39:50,796 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:50,826 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:50,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:39:50,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:39:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:39:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:39:50,827 INFO L87 Difference]: Start difference. First operand 1565 states and 2547 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:52,661 INFO L93 Difference]: Finished difference Result 1635 states and 2655 transitions. [2022-02-20 19:39:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:39:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-20 19:39:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:39:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1628 transitions. [2022-02-20 19:39:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1628 transitions. [2022-02-20 19:39:52,677 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1628 transitions. [2022-02-20 19:39:54,080 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1628 edges. 1628 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:54,158 INFO L225 Difference]: With dead ends: 1635 [2022-02-20 19:39:54,158 INFO L226 Difference]: Without dead ends: 1597 [2022-02-20 19:39:54,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:39:54,160 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1484 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:39:54,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 1610 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:39:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2022-02-20 19:39:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1595. [2022-02-20 19:39:54,193 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:39:54,196 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1597 states. Second operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:54,198 INFO L74 IsIncluded]: Start isIncluded. First operand 1597 states. Second operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:54,200 INFO L87 Difference]: Start difference. First operand 1597 states. Second operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:54,284 INFO L93 Difference]: Finished difference Result 1597 states and 2595 transitions. [2022-02-20 19:39:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2595 transitions. [2022-02-20 19:39:54,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:54,287 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:54,290 INFO L74 IsIncluded]: Start isIncluded. First operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1597 states. [2022-02-20 19:39:54,292 INFO L87 Difference]: Start difference. First operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1597 states. [2022-02-20 19:39:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:54,406 INFO L93 Difference]: Finished difference Result 1597 states and 2595 transitions. [2022-02-20 19:39:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2595 transitions. [2022-02-20 19:39:54,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:54,409 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:54,409 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:39:54,410 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:39:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1593 states have (on average 1.628374136848713) internal successors, (2594), 1594 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2594 transitions. [2022-02-20 19:39:54,530 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2594 transitions. Word has length 41 [2022-02-20 19:39:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:39:54,530 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 2594 transitions. [2022-02-20 19:39:54,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2594 transitions. [2022-02-20 19:39:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-20 19:39:54,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:39:54,534 INFO L514 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] [2022-02-20 19:39:54,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-20 19:39:54,534 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:39:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:39:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2022-02-20 19:39:54,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:39:54,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995398927] [2022-02-20 19:39:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:39:54,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:39:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:39:54,621 INFO L290 TraceCheckUtils]: 0: Hoare triple {20958#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {20958#true} is VALID [2022-02-20 19:39:54,621 INFO L290 TraceCheckUtils]: 1: Hoare triple {20958#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {20958#true} is VALID [2022-02-20 19:39:54,621 INFO L290 TraceCheckUtils]: 2: Hoare triple {20958#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {20958#true} is VALID [2022-02-20 19:39:54,622 INFO L290 TraceCheckUtils]: 3: Hoare triple {20958#true} assume 0 == ~r1~0 % 256; {20958#true} is VALID [2022-02-20 19:39:54,622 INFO L290 TraceCheckUtils]: 4: Hoare triple {20958#true} assume ~id1~0 >= 0; {20958#true} is VALID [2022-02-20 19:39:54,622 INFO L290 TraceCheckUtils]: 5: Hoare triple {20958#true} assume 0 == ~st1~0; {20958#true} is VALID [2022-02-20 19:39:54,622 INFO L290 TraceCheckUtils]: 6: Hoare triple {20958#true} assume ~send1~0 == ~id1~0; {20958#true} is VALID [2022-02-20 19:39:54,622 INFO L290 TraceCheckUtils]: 7: Hoare triple {20958#true} assume 0 == ~mode1~0 % 256; {20958#true} is VALID [2022-02-20 19:39:54,623 INFO L290 TraceCheckUtils]: 8: Hoare triple {20958#true} assume ~id2~0 >= 0; {20958#true} is VALID [2022-02-20 19:39:54,623 INFO L290 TraceCheckUtils]: 9: Hoare triple {20958#true} assume 0 == ~st2~0; {20958#true} is VALID [2022-02-20 19:39:54,623 INFO L290 TraceCheckUtils]: 10: Hoare triple {20958#true} assume ~send2~0 == ~id2~0; {20958#true} is VALID [2022-02-20 19:39:54,623 INFO L290 TraceCheckUtils]: 11: Hoare triple {20958#true} assume 0 == ~mode2~0 % 256; {20958#true} is VALID [2022-02-20 19:39:54,623 INFO L290 TraceCheckUtils]: 12: Hoare triple {20958#true} assume ~id3~0 >= 0; {20958#true} is VALID [2022-02-20 19:39:54,624 INFO L290 TraceCheckUtils]: 13: Hoare triple {20958#true} assume 0 == ~st3~0; {20958#true} is VALID [2022-02-20 19:39:54,624 INFO L290 TraceCheckUtils]: 14: Hoare triple {20958#true} assume ~send3~0 == ~id3~0; {20958#true} is VALID [2022-02-20 19:39:54,624 INFO L290 TraceCheckUtils]: 15: Hoare triple {20958#true} assume 0 == ~mode3~0 % 256; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,625 INFO L290 TraceCheckUtils]: 16: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume ~id1~0 != ~id2~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,625 INFO L290 TraceCheckUtils]: 17: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume ~id1~0 != ~id3~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,626 INFO L290 TraceCheckUtils]: 18: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,626 INFO L290 TraceCheckUtils]: 19: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} init_#res#1 := init_~tmp~0#1; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,627 INFO L290 TraceCheckUtils]: 20: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,627 INFO L290 TraceCheckUtils]: 21: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume !(0 == assume_abort_if_not_~cond#1); {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,628 INFO L290 TraceCheckUtils]: 22: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,628 INFO L290 TraceCheckUtils]: 23: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,629 INFO L290 TraceCheckUtils]: 24: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume !(0 != ~mode1~0 % 256); {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,629 INFO L290 TraceCheckUtils]: 25: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,630 INFO L290 TraceCheckUtils]: 26: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,630 INFO L290 TraceCheckUtils]: 27: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,631 INFO L290 TraceCheckUtils]: 28: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume !(0 != ~mode2~0 % 256); {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,631 INFO L290 TraceCheckUtils]: 29: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite6#1 := ~send2~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,632 INFO L290 TraceCheckUtils]: 30: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} ~p2_new~0 := (if node2_#t~ite6#1 % 256 <= 127 then node2_#t~ite6#1 % 256 else node2_#t~ite6#1 % 256 - 256);havoc node2_#t~ite6#1;~mode2~0 := 1; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,632 INFO L290 TraceCheckUtils]: 31: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} is VALID [2022-02-20 19:39:54,633 INFO L290 TraceCheckUtils]: 32: Hoare triple {20960#(= (+ (* (- 256) (div ~mode3~0 256)) ~mode3~0) 0)} assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; {20959#false} is VALID [2022-02-20 19:39:54,633 INFO L290 TraceCheckUtils]: 33: Hoare triple {20959#false} assume !(node3_~m3~0#1 != ~nomsg~0); {20959#false} is VALID [2022-02-20 19:39:54,633 INFO L290 TraceCheckUtils]: 34: Hoare triple {20959#false} ~mode3~0 := 0; {20959#false} is VALID [2022-02-20 19:39:54,634 INFO L290 TraceCheckUtils]: 35: Hoare triple {20959#false} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {20959#false} is VALID [2022-02-20 19:39:54,634 INFO L290 TraceCheckUtils]: 36: Hoare triple {20959#false} assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0; {20959#false} is VALID [2022-02-20 19:39:54,634 INFO L290 TraceCheckUtils]: 37: Hoare triple {20959#false} check_#res#1 := check_~tmp~1#1; {20959#false} is VALID [2022-02-20 19:39:54,634 INFO L290 TraceCheckUtils]: 38: Hoare triple {20959#false} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {20959#false} is VALID [2022-02-20 19:39:54,634 INFO L290 TraceCheckUtils]: 39: Hoare triple {20959#false} assume 0 == assert_~arg#1 % 256; {20959#false} is VALID [2022-02-20 19:39:54,635 INFO L290 TraceCheckUtils]: 40: Hoare triple {20959#false} assume !false; {20959#false} is VALID [2022-02-20 19:39:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:39:54,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:39:54,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995398927] [2022-02-20 19:39:54,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995398927] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:39:54,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:39:54,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:39:54,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865451653] [2022-02-20 19:39:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:39:54,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-20 19:39:54,637 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:39:54,637 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:54,664 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:54,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:39:54,664 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:39:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:39:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:39:54,665 INFO L87 Difference]: Start difference. First operand 1595 states and 2594 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:56,464 INFO L93 Difference]: Finished difference Result 1719 states and 2786 transitions. [2022-02-20 19:39:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:39:56,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-20 19:39:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:39:56,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1628 transitions. [2022-02-20 19:39:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1628 transitions. [2022-02-20 19:39:56,483 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1628 transitions. [2022-02-20 19:39:57,873 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1628 edges. 1628 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:57,950 INFO L225 Difference]: With dead ends: 1719 [2022-02-20 19:39:57,950 INFO L226 Difference]: Without dead ends: 1651 [2022-02-20 19:39:57,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:39:57,951 INFO L933 BasicCegarLoop]: 1544 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:39:57,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:39:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2022-02-20 19:39:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2022-02-20 19:39:57,990 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:39:57,992 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1651 states. Second operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:57,994 INFO L74 IsIncluded]: Start isIncluded. First operand 1651 states. Second operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:57,996 INFO L87 Difference]: Start difference. First operand 1651 states. Second operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:58,111 INFO L93 Difference]: Finished difference Result 1651 states and 2678 transitions. [2022-02-20 19:39:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2678 transitions. [2022-02-20 19:39:58,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:58,113 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:58,116 INFO L74 IsIncluded]: Start isIncluded. First operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1651 states. [2022-02-20 19:39:58,118 INFO L87 Difference]: Start difference. First operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1651 states. [2022-02-20 19:39:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:39:58,235 INFO L93 Difference]: Finished difference Result 1651 states and 2678 transitions. [2022-02-20 19:39:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2678 transitions. [2022-02-20 19:39:58,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:39:58,238 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:39:58,238 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:39:58,238 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:39:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1647 states have (on average 1.6253794778384942) internal successors, (2677), 1648 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2677 transitions. [2022-02-20 19:39:58,354 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2677 transitions. Word has length 41 [2022-02-20 19:39:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:39:58,355 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2677 transitions. [2022-02-20 19:39:58,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2677 transitions. [2022-02-20 19:39:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-20 19:39:58,356 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:39:58,356 INFO L514 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] [2022-02-20 19:39:58,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-20 19:39:58,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:39:58,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:39:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2022-02-20 19:39:58,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:39:58,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989965167] [2022-02-20 19:39:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:39:58,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:39:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:39:58,444 INFO L290 TraceCheckUtils]: 0: Hoare triple {27715#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {27715#true} is VALID [2022-02-20 19:39:58,447 INFO L290 TraceCheckUtils]: 1: Hoare triple {27715#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {27715#true} is VALID [2022-02-20 19:39:58,447 INFO L290 TraceCheckUtils]: 2: Hoare triple {27715#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {27715#true} is VALID [2022-02-20 19:39:58,447 INFO L290 TraceCheckUtils]: 3: Hoare triple {27715#true} assume 0 == ~r1~0 % 256; {27715#true} is VALID [2022-02-20 19:39:58,447 INFO L290 TraceCheckUtils]: 4: Hoare triple {27715#true} assume ~id1~0 >= 0; {27715#true} is VALID [2022-02-20 19:39:58,448 INFO L290 TraceCheckUtils]: 5: Hoare triple {27715#true} assume 0 == ~st1~0; {27717#(<= ~st1~0 0)} is VALID [2022-02-20 19:39:58,448 INFO L290 TraceCheckUtils]: 6: Hoare triple {27717#(<= ~st1~0 0)} assume ~send1~0 == ~id1~0; {27717#(<= ~st1~0 0)} is VALID [2022-02-20 19:39:58,448 INFO L290 TraceCheckUtils]: 7: Hoare triple {27717#(<= ~st1~0 0)} assume 0 == ~mode1~0 % 256; {27717#(<= ~st1~0 0)} is VALID [2022-02-20 19:39:58,449 INFO L290 TraceCheckUtils]: 8: Hoare triple {27717#(<= ~st1~0 0)} assume ~id2~0 >= 0; {27717#(<= ~st1~0 0)} is VALID [2022-02-20 19:39:58,449 INFO L290 TraceCheckUtils]: 9: Hoare triple {27717#(<= ~st1~0 0)} assume 0 == ~st2~0; {27718#(<= (+ ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,449 INFO L290 TraceCheckUtils]: 10: Hoare triple {27718#(<= (+ ~st2~0 ~st1~0) 0)} assume ~send2~0 == ~id2~0; {27718#(<= (+ ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,450 INFO L290 TraceCheckUtils]: 11: Hoare triple {27718#(<= (+ ~st2~0 ~st1~0) 0)} assume 0 == ~mode2~0 % 256; {27718#(<= (+ ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,450 INFO L290 TraceCheckUtils]: 12: Hoare triple {27718#(<= (+ ~st2~0 ~st1~0) 0)} assume ~id3~0 >= 0; {27718#(<= (+ ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,450 INFO L290 TraceCheckUtils]: 13: Hoare triple {27718#(<= (+ ~st2~0 ~st1~0) 0)} assume 0 == ~st3~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,451 INFO L290 TraceCheckUtils]: 14: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~send3~0 == ~id3~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,451 INFO L290 TraceCheckUtils]: 15: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume 0 == ~mode3~0 % 256; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,451 INFO L290 TraceCheckUtils]: 16: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~id1~0 != ~id2~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,452 INFO L290 TraceCheckUtils]: 17: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~id1~0 != ~id3~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,452 INFO L290 TraceCheckUtils]: 18: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,452 INFO L290 TraceCheckUtils]: 19: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} init_#res#1 := init_~tmp~0#1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,453 INFO L290 TraceCheckUtils]: 20: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,453 INFO L290 TraceCheckUtils]: 21: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume !(0 == assume_abort_if_not_~cond#1); {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,453 INFO L290 TraceCheckUtils]: 22: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,454 INFO L290 TraceCheckUtils]: 23: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,454 INFO L290 TraceCheckUtils]: 24: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume !(0 != ~mode1~0 % 256); {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,454 INFO L290 TraceCheckUtils]: 25: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,455 INFO L290 TraceCheckUtils]: 26: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,455 INFO L290 TraceCheckUtils]: 27: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,455 INFO L290 TraceCheckUtils]: 28: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume !(0 != ~mode2~0 % 256); {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,456 INFO L290 TraceCheckUtils]: 29: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite6#1 := ~send2~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,456 INFO L290 TraceCheckUtils]: 30: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} ~p2_new~0 := (if node2_#t~ite6#1 % 256 <= 127 then node2_#t~ite6#1 % 256 else node2_#t~ite6#1 % 256 - 256);havoc node2_#t~ite6#1;~mode2~0 := 1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,461 INFO L290 TraceCheckUtils]: 31: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,461 INFO L290 TraceCheckUtils]: 32: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume !(0 != ~mode3~0 % 256); {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,461 INFO L290 TraceCheckUtils]: 33: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite7#1 := ~send3~0; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,462 INFO L290 TraceCheckUtils]: 34: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} ~p3_new~0 := (if node3_#t~ite7#1 % 256 <= 127 then node3_#t~ite7#1 % 256 else node3_#t~ite7#1 % 256 - 256);havoc node3_#t~ite7#1;~mode3~0 := 1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,462 INFO L290 TraceCheckUtils]: 35: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} is VALID [2022-02-20 19:39:58,463 INFO L290 TraceCheckUtils]: 36: Hoare triple {27719#(<= (+ ~st3~0 ~st2~0 ~st1~0) 0)} assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0; {27716#false} is VALID [2022-02-20 19:39:58,463 INFO L290 TraceCheckUtils]: 37: Hoare triple {27716#false} check_#res#1 := check_~tmp~1#1; {27716#false} is VALID [2022-02-20 19:39:58,463 INFO L290 TraceCheckUtils]: 38: Hoare triple {27716#false} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {27716#false} is VALID [2022-02-20 19:39:58,463 INFO L290 TraceCheckUtils]: 39: Hoare triple {27716#false} assume 0 == assert_~arg#1 % 256; {27716#false} is VALID [2022-02-20 19:39:58,463 INFO L290 TraceCheckUtils]: 40: Hoare triple {27716#false} assume !false; {27716#false} is VALID [2022-02-20 19:39:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:39:58,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:39:58,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989965167] [2022-02-20 19:39:58,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989965167] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:39:58,464 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:39:58,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 19:39:58,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045789903] [2022-02-20 19:39:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:39:58,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-20 19:39:58,465 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:39:58,465 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:39:58,491 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:39:58,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 19:39:58,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:39:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 19:39:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 19:39:58,492 INFO L87 Difference]: Start difference. First operand 1649 states and 2677 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:01,182 INFO L93 Difference]: Finished difference Result 2381 states and 3811 transitions. [2022-02-20 19:40:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-20 19:40:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-20 19:40:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:40:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1874 transitions. [2022-02-20 19:40:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1874 transitions. [2022-02-20 19:40:01,196 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 1874 transitions. [2022-02-20 19:40:02,699 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1874 edges. 1874 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:40:02,843 INFO L225 Difference]: With dead ends: 2381 [2022-02-20 19:40:02,843 INFO L226 Difference]: Without dead ends: 2259 [2022-02-20 19:40:02,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-20 19:40:02,844 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 4693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-20 19:40:02,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4693 Valid, 1934 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-20 19:40:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2022-02-20 19:40:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1769. [2022-02-20 19:40:02,979 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:40:02,982 INFO L82 GeneralOperation]: Start isEquivalent. First operand 2259 states. Second operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:02,984 INFO L74 IsIncluded]: Start isIncluded. First operand 2259 states. Second operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:02,985 INFO L87 Difference]: Start difference. First operand 2259 states. Second operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:03,189 INFO L93 Difference]: Finished difference Result 2259 states and 3598 transitions. [2022-02-20 19:40:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3598 transitions. [2022-02-20 19:40:03,193 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:40:03,193 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:40:03,196 INFO L74 IsIncluded]: Start isIncluded. First operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 2259 states. [2022-02-20 19:40:03,198 INFO L87 Difference]: Start difference. First operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 2259 states. [2022-02-20 19:40:03,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:03,356 INFO L93 Difference]: Finished difference Result 2259 states and 3598 transitions. [2022-02-20 19:40:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3598 transitions. [2022-02-20 19:40:03,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:40:03,358 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:40:03,359 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:40:03,359 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:40:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1767 states have (on average 1.6168647425014149) internal successors, (2857), 1768 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2857 transitions. [2022-02-20 19:40:03,447 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2857 transitions. Word has length 41 [2022-02-20 19:40:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:40:03,447 INFO L470 AbstractCegarLoop]: Abstraction has 1769 states and 2857 transitions. [2022-02-20 19:40:03,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2857 transitions. [2022-02-20 19:40:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-20 19:40:03,448 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:40:03,448 INFO L514 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] [2022-02-20 19:40:03,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-20 19:40:03,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:40:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:40:03,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2022-02-20 19:40:03,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:40:03,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998102618] [2022-02-20 19:40:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:40:03,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:40:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:40:03,525 INFO L290 TraceCheckUtils]: 0: Hoare triple {36635#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {36635#true} is VALID [2022-02-20 19:40:03,525 INFO L290 TraceCheckUtils]: 1: Hoare triple {36635#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {36635#true} is VALID [2022-02-20 19:40:03,533 INFO L290 TraceCheckUtils]: 2: Hoare triple {36635#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {36635#true} is VALID [2022-02-20 19:40:03,534 INFO L290 TraceCheckUtils]: 3: Hoare triple {36635#true} assume 0 == ~r1~0 % 256; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,534 INFO L290 TraceCheckUtils]: 4: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~id1~0 >= 0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,535 INFO L290 TraceCheckUtils]: 5: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume 0 == ~st1~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,535 INFO L290 TraceCheckUtils]: 6: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~send1~0 == ~id1~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,536 INFO L290 TraceCheckUtils]: 7: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume 0 == ~mode1~0 % 256; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,536 INFO L290 TraceCheckUtils]: 8: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~id2~0 >= 0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,536 INFO L290 TraceCheckUtils]: 9: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume 0 == ~st2~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,537 INFO L290 TraceCheckUtils]: 10: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~send2~0 == ~id2~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,538 INFO L290 TraceCheckUtils]: 11: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume 0 == ~mode2~0 % 256; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,539 INFO L290 TraceCheckUtils]: 12: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~id3~0 >= 0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,539 INFO L290 TraceCheckUtils]: 13: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume 0 == ~st3~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,541 INFO L290 TraceCheckUtils]: 14: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~send3~0 == ~id3~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,541 INFO L290 TraceCheckUtils]: 15: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume 0 == ~mode3~0 % 256; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,541 INFO L290 TraceCheckUtils]: 16: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~id1~0 != ~id2~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,544 INFO L290 TraceCheckUtils]: 17: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~id1~0 != ~id3~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,545 INFO L290 TraceCheckUtils]: 18: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,545 INFO L290 TraceCheckUtils]: 19: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} init_#res#1 := init_~tmp~0#1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,545 INFO L290 TraceCheckUtils]: 20: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,546 INFO L290 TraceCheckUtils]: 21: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume !(0 == assume_abort_if_not_~cond#1); {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,546 INFO L290 TraceCheckUtils]: 22: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,546 INFO L290 TraceCheckUtils]: 23: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,547 INFO L290 TraceCheckUtils]: 24: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume !(0 != ~mode1~0 % 256); {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,547 INFO L290 TraceCheckUtils]: 25: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,547 INFO L290 TraceCheckUtils]: 26: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,548 INFO L290 TraceCheckUtils]: 27: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,548 INFO L290 TraceCheckUtils]: 28: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume !(0 != ~mode2~0 % 256); {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,548 INFO L290 TraceCheckUtils]: 29: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite6#1 := ~send2~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,549 INFO L290 TraceCheckUtils]: 30: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} ~p2_new~0 := (if node2_#t~ite6#1 % 256 <= 127 then node2_#t~ite6#1 % 256 else node2_#t~ite6#1 % 256 - 256);havoc node2_#t~ite6#1;~mode2~0 := 1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,549 INFO L290 TraceCheckUtils]: 31: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,549 INFO L290 TraceCheckUtils]: 32: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume !(0 != ~mode3~0 % 256); {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,550 INFO L290 TraceCheckUtils]: 33: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite7#1 := ~send3~0; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,550 INFO L290 TraceCheckUtils]: 34: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} ~p3_new~0 := (if node3_#t~ite7#1 % 256 <= 127 then node3_#t~ite7#1 % 256 else node3_#t~ite7#1 % 256 - 256);havoc node3_#t~ite7#1;~mode3~0 := 1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,550 INFO L290 TraceCheckUtils]: 35: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,551 INFO L290 TraceCheckUtils]: 36: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} is VALID [2022-02-20 19:40:03,551 INFO L290 TraceCheckUtils]: 37: Hoare triple {36637#(<= ~r1~0 (* (div ~r1~0 256) 256))} assume ~r1~0 % 256 >= 3; {36636#false} is VALID [2022-02-20 19:40:03,551 INFO L290 TraceCheckUtils]: 38: Hoare triple {36636#false} assume ~r1~0 % 256 < 3;check_~tmp~1#1 := 1; {36636#false} is VALID [2022-02-20 19:40:03,555 INFO L290 TraceCheckUtils]: 39: Hoare triple {36636#false} check_#res#1 := check_~tmp~1#1; {36636#false} is VALID [2022-02-20 19:40:03,556 INFO L290 TraceCheckUtils]: 40: Hoare triple {36636#false} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {36636#false} is VALID [2022-02-20 19:40:03,556 INFO L290 TraceCheckUtils]: 41: Hoare triple {36636#false} assume 0 == assert_~arg#1 % 256; {36636#false} is VALID [2022-02-20 19:40:03,556 INFO L290 TraceCheckUtils]: 42: Hoare triple {36636#false} assume !false; {36636#false} is VALID [2022-02-20 19:40:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:40:03,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:40:03,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998102618] [2022-02-20 19:40:03,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998102618] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:40:03,556 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:40:03,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:40:03,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325496151] [2022-02-20 19:40:03,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:40:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-20 19:40:03,557 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:40:03,557 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:03,585 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:40:03,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:40:03,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:40:03,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:40:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:40:03,587 INFO L87 Difference]: Start difference. First operand 1769 states and 2857 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:05,296 INFO L93 Difference]: Finished difference Result 2209 states and 3519 transitions. [2022-02-20 19:40:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:40:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-20 19:40:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:40:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1629 transitions. [2022-02-20 19:40:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1629 transitions. [2022-02-20 19:40:05,308 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1629 transitions. [2022-02-20 19:40:06,659 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1629 edges. 1629 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:40:06,768 INFO L225 Difference]: With dead ends: 2209 [2022-02-20 19:40:06,768 INFO L226 Difference]: Without dead ends: 1967 [2022-02-20 19:40:06,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:40:06,770 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 1471 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:40:06,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 1569 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:40:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-02-20 19:40:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1957. [2022-02-20 19:40:06,994 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:40:06,997 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1967 states. Second operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:06,999 INFO L74 IsIncluded]: Start isIncluded. First operand 1967 states. Second operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:07,001 INFO L87 Difference]: Start difference. First operand 1967 states. Second operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:07,157 INFO L93 Difference]: Finished difference Result 1967 states and 3130 transitions. [2022-02-20 19:40:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 3130 transitions. [2022-02-20 19:40:07,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:40:07,160 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:40:07,163 INFO L74 IsIncluded]: Start isIncluded. First operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1967 states. [2022-02-20 19:40:07,164 INFO L87 Difference]: Start difference. First operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1967 states. [2022-02-20 19:40:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:07,316 INFO L93 Difference]: Finished difference Result 1967 states and 3130 transitions. [2022-02-20 19:40:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 3130 transitions. [2022-02-20 19:40:07,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:40:07,318 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:40:07,318 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:40:07,318 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:40:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 1.5964194373401535) internal successors, (3121), 1956 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3121 transitions. [2022-02-20 19:40:07,468 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3121 transitions. Word has length 43 [2022-02-20 19:40:07,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:40:07,468 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 3121 transitions. [2022-02-20 19:40:07,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3121 transitions. [2022-02-20 19:40:07,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-20 19:40:07,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:40:07,469 INFO L514 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] [2022-02-20 19:40:07,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-20 19:40:07,469 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:40:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:40:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2022-02-20 19:40:07,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:40:07,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156440265] [2022-02-20 19:40:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:40:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:40:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:40:07,580 INFO L290 TraceCheckUtils]: 0: Hoare triple {44994#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {44994#true} is VALID [2022-02-20 19:40:07,581 INFO L290 TraceCheckUtils]: 1: Hoare triple {44994#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {44994#true} is VALID [2022-02-20 19:40:07,581 INFO L290 TraceCheckUtils]: 2: Hoare triple {44994#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {44994#true} is VALID [2022-02-20 19:40:07,581 INFO L290 TraceCheckUtils]: 3: Hoare triple {44994#true} assume 0 == ~r1~0 % 256; {44994#true} is VALID [2022-02-20 19:40:07,581 INFO L290 TraceCheckUtils]: 4: Hoare triple {44994#true} assume ~id1~0 >= 0; {44994#true} is VALID [2022-02-20 19:40:07,582 INFO L290 TraceCheckUtils]: 5: Hoare triple {44994#true} assume 0 == ~st1~0; {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} is VALID [2022-02-20 19:40:07,582 INFO L290 TraceCheckUtils]: 6: Hoare triple {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} assume ~send1~0 == ~id1~0; {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} is VALID [2022-02-20 19:40:07,583 INFO L290 TraceCheckUtils]: 7: Hoare triple {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} assume 0 == ~mode1~0 % 256; {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} is VALID [2022-02-20 19:40:07,584 INFO L290 TraceCheckUtils]: 8: Hoare triple {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} assume ~id2~0 >= 0; {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} is VALID [2022-02-20 19:40:07,584 INFO L290 TraceCheckUtils]: 9: Hoare triple {44996#(and (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 ~st1~0)) (or (<= ~st1~0 0) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0)))} assume 0 == ~st2~0; {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} is VALID [2022-02-20 19:40:07,585 INFO L290 TraceCheckUtils]: 10: Hoare triple {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} assume ~send2~0 == ~id2~0; {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} is VALID [2022-02-20 19:40:07,585 INFO L290 TraceCheckUtils]: 11: Hoare triple {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} assume 0 == ~mode2~0 % 256; {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} is VALID [2022-02-20 19:40:07,586 INFO L290 TraceCheckUtils]: 12: Hoare triple {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} assume ~id3~0 >= 0; {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} is VALID [2022-02-20 19:40:07,587 INFO L290 TraceCheckUtils]: 13: Hoare triple {44997#(and (or (<= (+ ~st3~0 ~st2~0 ~st1~0) 0) (<= (+ ~st2~0 ~st1~0) 0)) (or (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= 0 (+ ~st2~0 ~st1~0))))} assume 0 == ~st3~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,587 INFO L290 TraceCheckUtils]: 14: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~send3~0 == ~id3~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,588 INFO L290 TraceCheckUtils]: 15: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume 0 == ~mode3~0 % 256; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,588 INFO L290 TraceCheckUtils]: 16: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~id1~0 != ~id2~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,589 INFO L290 TraceCheckUtils]: 17: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~id1~0 != ~id3~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,589 INFO L290 TraceCheckUtils]: 18: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,589 INFO L290 TraceCheckUtils]: 19: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} init_#res#1 := init_~tmp~0#1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,590 INFO L290 TraceCheckUtils]: 20: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,590 INFO L290 TraceCheckUtils]: 21: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !(0 == assume_abort_if_not_~cond#1); {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,591 INFO L290 TraceCheckUtils]: 22: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,591 INFO L290 TraceCheckUtils]: 23: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,592 INFO L290 TraceCheckUtils]: 24: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !(0 != ~mode1~0 % 256); {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,592 INFO L290 TraceCheckUtils]: 25: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,593 INFO L290 TraceCheckUtils]: 26: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,593 INFO L290 TraceCheckUtils]: 27: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,594 INFO L290 TraceCheckUtils]: 28: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !(0 != ~mode2~0 % 256); {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,594 INFO L290 TraceCheckUtils]: 29: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite6#1 := ~send2~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,595 INFO L290 TraceCheckUtils]: 30: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} ~p2_new~0 := (if node2_#t~ite6#1 % 256 <= 127 then node2_#t~ite6#1 % 256 else node2_#t~ite6#1 % 256 - 256);havoc node2_#t~ite6#1;~mode2~0 := 1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,595 INFO L290 TraceCheckUtils]: 31: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,603 INFO L290 TraceCheckUtils]: 32: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !(0 != ~mode3~0 % 256); {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,604 INFO L290 TraceCheckUtils]: 33: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite7#1 := ~send3~0; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,605 INFO L290 TraceCheckUtils]: 34: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} ~p3_new~0 := (if node3_#t~ite7#1 % 256 <= 127 then node3_#t~ite7#1 % 256 else node3_#t~ite7#1 % 256 - 256);havoc node3_#t~ite7#1;~mode3~0 := 1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,608 INFO L290 TraceCheckUtils]: 35: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,609 INFO L290 TraceCheckUtils]: 36: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,611 INFO L290 TraceCheckUtils]: 37: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !(~r1~0 % 256 >= 3); {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} is VALID [2022-02-20 19:40:07,612 INFO L290 TraceCheckUtils]: 38: Hoare triple {44998#(and (< 0 (+ ~st3~0 ~st2~0 ~st1~0 1)) (<= (+ ~st3~0 ~st2~0 ~st1~0) 0))} assume !(0 == ~st1~0 + ~st2~0 + ~st3~0);check_~tmp~1#1 := 0; {44995#false} is VALID [2022-02-20 19:40:07,612 INFO L290 TraceCheckUtils]: 39: Hoare triple {44995#false} check_#res#1 := check_~tmp~1#1; {44995#false} is VALID [2022-02-20 19:40:07,612 INFO L290 TraceCheckUtils]: 40: Hoare triple {44995#false} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {44995#false} is VALID [2022-02-20 19:40:07,613 INFO L290 TraceCheckUtils]: 41: Hoare triple {44995#false} assume 0 == assert_~arg#1 % 256; {44995#false} is VALID [2022-02-20 19:40:07,614 INFO L290 TraceCheckUtils]: 42: Hoare triple {44995#false} assume !false; {44995#false} is VALID [2022-02-20 19:40:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:40:07,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:40:07,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156440265] [2022-02-20 19:40:07,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156440265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:40:07,615 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:40:07,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 19:40:07,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468007875] [2022-02-20 19:40:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:40:07,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-20 19:40:07,616 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:40:07,616 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:07,649 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:40:07,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 19:40:07,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:40:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 19:40:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-20 19:40:07,650 INFO L87 Difference]: Start difference. First operand 1957 states and 3121 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:09,861 INFO L93 Difference]: Finished difference Result 2389 states and 3755 transitions. [2022-02-20 19:40:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 19:40:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-20 19:40:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:40:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1636 transitions. [2022-02-20 19:40:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1636 transitions. [2022-02-20 19:40:09,872 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 1636 transitions. [2022-02-20 19:40:11,238 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1636 edges. 1636 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:40:11,345 INFO L225 Difference]: With dead ends: 2389 [2022-02-20 19:40:11,346 INFO L226 Difference]: Without dead ends: 1959 [2022-02-20 19:40:11,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-20 19:40:11,347 INFO L933 BasicCegarLoop]: 1515 mSDtfsCounter, 1531 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:40:11,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1680 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:40:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-02-20 19:40:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2022-02-20 19:40:11,602 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:40:11,605 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1959 states. Second operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:11,607 INFO L74 IsIncluded]: Start isIncluded. First operand 1959 states. Second operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:11,609 INFO L87 Difference]: Start difference. First operand 1959 states. Second operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:11,755 INFO L93 Difference]: Finished difference Result 1959 states and 3114 transitions. [2022-02-20 19:40:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3114 transitions. [2022-02-20 19:40:11,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:40:11,757 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:40:11,760 INFO L74 IsIncluded]: Start isIncluded. First operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1959 states. [2022-02-20 19:40:11,762 INFO L87 Difference]: Start difference. First operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1959 states. [2022-02-20 19:40:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:40:11,864 INFO L93 Difference]: Finished difference Result 1959 states and 3114 transitions. [2022-02-20 19:40:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3114 transitions. [2022-02-20 19:40:11,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:40:11,866 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:40:11,866 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:40:11,866 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:40:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1955 states have (on average 1.5923273657289003) internal successors, (3113), 1956 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3113 transitions. [2022-02-20 19:40:11,985 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3113 transitions. Word has length 43 [2022-02-20 19:40:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:40:11,985 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 3113 transitions. [2022-02-20 19:40:11,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3113 transitions. [2022-02-20 19:40:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-20 19:40:11,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:40:11,986 INFO L514 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] [2022-02-20 19:40:11,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-20 19:40:11,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:40:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:40:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2022-02-20 19:40:11,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:40:11,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528275159] [2022-02-20 19:40:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:40:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:40:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:40:12,081 INFO L290 TraceCheckUtils]: 0: Hoare triple {53565#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~inputC~0 := 3;~inputF~0 := 6;~inputA~0 := 1;~inputB~0 := 2;~inputD~0 := 4;~inputE~0 := 5;~a17~0 := -124;~a5~0 := 4;~a24~0 := 15;~a2~0 := 170;~a7~0 := 13; {53565#true} is VALID [2022-02-20 19:40:12,081 INFO L290 TraceCheckUtils]: 1: Hoare triple {53565#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet37#1, main_#t~ret38#1, main_#t~ret39#1;assume -2147483648 <= main_#t~nondet37#1 && main_#t~nondet37#1 <= 2147483647; {53565#true} is VALID [2022-02-20 19:40:12,081 INFO L290 TraceCheckUtils]: 2: Hoare triple {53565#true} assume 0 != main_#t~nondet37#1;havoc main_#t~nondet37#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_#t~nondet8#1, main1_#t~nondet9#1, main1_#t~nondet10#1, main1_#t~nondet11#1, main1_#t~nondet12#1, main1_#t~nondet13#1, main1_#t~nondet14#1, main1_#t~nondet15#1, main1_#t~nondet16#1, main1_#t~nondet17#1, main1_#t~nondet18#1, main1_#t~nondet19#1, main1_#t~nondet20#1, main1_#t~ret21#1, main1_#t~ret22#1, main1_~c1~0#1, main1_~i2~0#1;havoc main1_~c1~0#1;havoc main1_~i2~0#1;main1_~c1~0#1 := 0;~r1~0 := main1_#t~nondet8#1;havoc main1_#t~nondet8#1;assume -128 <= main1_#t~nondet9#1 && main1_#t~nondet9#1 <= 127;~id1~0 := main1_#t~nondet9#1;havoc main1_#t~nondet9#1;assume -128 <= main1_#t~nondet10#1 && main1_#t~nondet10#1 <= 127;~st1~0 := main1_#t~nondet10#1;havoc main1_#t~nondet10#1;assume -128 <= main1_#t~nondet11#1 && main1_#t~nondet11#1 <= 127;~send1~0 := main1_#t~nondet11#1;havoc main1_#t~nondet11#1;~mode1~0 := main1_#t~nondet12#1;havoc main1_#t~nondet12#1;assume -128 <= main1_#t~nondet13#1 && main1_#t~nondet13#1 <= 127;~id2~0 := main1_#t~nondet13#1;havoc main1_#t~nondet13#1;assume -128 <= main1_#t~nondet14#1 && main1_#t~nondet14#1 <= 127;~st2~0 := main1_#t~nondet14#1;havoc main1_#t~nondet14#1;assume -128 <= main1_#t~nondet15#1 && main1_#t~nondet15#1 <= 127;~send2~0 := main1_#t~nondet15#1;havoc main1_#t~nondet15#1;~mode2~0 := main1_#t~nondet16#1;havoc main1_#t~nondet16#1;assume -128 <= main1_#t~nondet17#1 && main1_#t~nondet17#1 <= 127;~id3~0 := main1_#t~nondet17#1;havoc main1_#t~nondet17#1;assume -128 <= main1_#t~nondet18#1 && main1_#t~nondet18#1 <= 127;~st3~0 := main1_#t~nondet18#1;havoc main1_#t~nondet18#1;assume -128 <= main1_#t~nondet19#1 && main1_#t~nondet19#1 <= 127;~send3~0 := main1_#t~nondet19#1;havoc main1_#t~nondet19#1;~mode3~0 := main1_#t~nondet20#1;havoc main1_#t~nondet20#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; {53565#true} is VALID [2022-02-20 19:40:12,081 INFO L290 TraceCheckUtils]: 3: Hoare triple {53565#true} assume 0 == ~r1~0 % 256; {53565#true} is VALID [2022-02-20 19:40:12,082 INFO L290 TraceCheckUtils]: 4: Hoare triple {53565#true} assume ~id1~0 >= 0; {53565#true} is VALID [2022-02-20 19:40:12,082 INFO L290 TraceCheckUtils]: 5: Hoare triple {53565#true} assume 0 == ~st1~0; {53565#true} is VALID [2022-02-20 19:40:12,082 INFO L290 TraceCheckUtils]: 6: Hoare triple {53565#true} assume ~send1~0 == ~id1~0; {53565#true} is VALID [2022-02-20 19:40:12,082 INFO L290 TraceCheckUtils]: 7: Hoare triple {53565#true} assume 0 == ~mode1~0 % 256; {53565#true} is VALID [2022-02-20 19:40:12,082 INFO L290 TraceCheckUtils]: 8: Hoare triple {53565#true} assume ~id2~0 >= 0; {53565#true} is VALID [2022-02-20 19:40:12,082 INFO L290 TraceCheckUtils]: 9: Hoare triple {53565#true} assume 0 == ~st2~0; {53565#true} is VALID [2022-02-20 19:40:12,083 INFO L290 TraceCheckUtils]: 10: Hoare triple {53565#true} assume ~send2~0 == ~id2~0; {53565#true} is VALID [2022-02-20 19:40:12,083 INFO L290 TraceCheckUtils]: 11: Hoare triple {53565#true} assume 0 == ~mode2~0 % 256; {53565#true} is VALID [2022-02-20 19:40:12,083 INFO L290 TraceCheckUtils]: 12: Hoare triple {53565#true} assume ~id3~0 >= 0; {53565#true} is VALID [2022-02-20 19:40:12,083 INFO L290 TraceCheckUtils]: 13: Hoare triple {53565#true} assume 0 == ~st3~0; {53565#true} is VALID [2022-02-20 19:40:12,083 INFO L290 TraceCheckUtils]: 14: Hoare triple {53565#true} assume ~send3~0 == ~id3~0; {53565#true} is VALID [2022-02-20 19:40:12,083 INFO L290 TraceCheckUtils]: 15: Hoare triple {53565#true} assume 0 == ~mode3~0 % 256; {53565#true} is VALID [2022-02-20 19:40:12,084 INFO L290 TraceCheckUtils]: 16: Hoare triple {53565#true} assume ~id1~0 != ~id2~0; {53565#true} is VALID [2022-02-20 19:40:12,084 INFO L290 TraceCheckUtils]: 17: Hoare triple {53565#true} assume ~id1~0 != ~id3~0; {53565#true} is VALID [2022-02-20 19:40:12,084 INFO L290 TraceCheckUtils]: 18: Hoare triple {53565#true} assume ~id2~0 != ~id3~0;init_~tmp~0#1 := 1; {53567#(= |ULTIMATE.start_init_~tmp~0#1| 1)} is VALID [2022-02-20 19:40:12,085 INFO L290 TraceCheckUtils]: 19: Hoare triple {53567#(= |ULTIMATE.start_init_~tmp~0#1| 1)} init_#res#1 := init_~tmp~0#1; {53568#(= |ULTIMATE.start_init_#res#1| 1)} is VALID [2022-02-20 19:40:12,085 INFO L290 TraceCheckUtils]: 20: Hoare triple {53568#(= |ULTIMATE.start_init_#res#1| 1)} main1_#t~ret21#1 := init_#res#1;assume { :end_inline_init } true;assume -2147483648 <= main1_#t~ret21#1 && main1_#t~ret21#1 <= 2147483647;main1_~i2~0#1 := main1_#t~ret21#1;havoc main1_#t~ret21#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main1_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {53569#(= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)} is VALID [2022-02-20 19:40:12,085 INFO L290 TraceCheckUtils]: 21: Hoare triple {53569#(= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)} assume !(0 == assume_abort_if_not_~cond#1); {53565#true} is VALID [2022-02-20 19:40:12,085 INFO L290 TraceCheckUtils]: 22: Hoare triple {53565#true} assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main1_~i2~0#1 := 0; {53565#true} is VALID [2022-02-20 19:40:12,086 INFO L290 TraceCheckUtils]: 23: Hoare triple {53565#true} assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; {53565#true} is VALID [2022-02-20 19:40:12,086 INFO L290 TraceCheckUtils]: 24: Hoare triple {53565#true} assume !(0 != ~mode1~0 % 256); {53565#true} is VALID [2022-02-20 19:40:12,086 INFO L290 TraceCheckUtils]: 25: Hoare triple {53565#true} assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite5#1 := ~send1~0; {53565#true} is VALID [2022-02-20 19:40:12,086 INFO L290 TraceCheckUtils]: 26: Hoare triple {53565#true} ~p1_new~0 := (if node1_#t~ite5#1 % 256 <= 127 then node1_#t~ite5#1 % 256 else node1_#t~ite5#1 % 256 - 256);havoc node1_#t~ite5#1;~mode1~0 := 1; {53565#true} is VALID [2022-02-20 19:40:12,086 INFO L290 TraceCheckUtils]: 27: Hoare triple {53565#true} assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; {53565#true} is VALID [2022-02-20 19:40:12,086 INFO L290 TraceCheckUtils]: 28: Hoare triple {53565#true} assume !(0 != ~mode2~0 % 256); {53565#true} is VALID [2022-02-20 19:40:12,087 INFO L290 TraceCheckUtils]: 29: Hoare triple {53565#true} assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite6#1 := ~send2~0; {53565#true} is VALID [2022-02-20 19:40:12,087 INFO L290 TraceCheckUtils]: 30: Hoare triple {53565#true} ~p2_new~0 := (if node2_#t~ite6#1 % 256 <= 127 then node2_#t~ite6#1 % 256 else node2_#t~ite6#1 % 256 - 256);havoc node2_#t~ite6#1;~mode2~0 := 1; {53565#true} is VALID [2022-02-20 19:40:12,087 INFO L290 TraceCheckUtils]: 31: Hoare triple {53565#true} assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; {53565#true} is VALID [2022-02-20 19:40:12,087 INFO L290 TraceCheckUtils]: 32: Hoare triple {53565#true} assume !(0 != ~mode3~0 % 256); {53565#true} is VALID [2022-02-20 19:40:12,087 INFO L290 TraceCheckUtils]: 33: Hoare triple {53565#true} assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite7#1 := ~send3~0; {53565#true} is VALID [2022-02-20 19:40:12,087 INFO L290 TraceCheckUtils]: 34: Hoare triple {53565#true} ~p3_new~0 := (if node3_#t~ite7#1 % 256 <= 127 then node3_#t~ite7#1 % 256 else node3_#t~ite7#1 % 256 - 256);havoc node3_#t~ite7#1;~mode3~0 := 1; {53565#true} is VALID [2022-02-20 19:40:12,088 INFO L290 TraceCheckUtils]: 35: Hoare triple {53565#true} assume { :end_inline_node3 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; {53565#true} is VALID [2022-02-20 19:40:12,088 INFO L290 TraceCheckUtils]: 36: Hoare triple {53565#true} assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; {53565#true} is VALID [2022-02-20 19:40:12,088 INFO L290 TraceCheckUtils]: 37: Hoare triple {53565#true} assume !(~r1~0 % 256 >= 3); {53565#true} is VALID [2022-02-20 19:40:12,088 INFO L290 TraceCheckUtils]: 38: Hoare triple {53565#true} assume 0 == ~st1~0 + ~st2~0 + ~st3~0; {53565#true} is VALID [2022-02-20 19:40:12,089 INFO L290 TraceCheckUtils]: 39: Hoare triple {53565#true} assume ~r1~0 % 256 < 3;check_~tmp~1#1 := 1; {53570#(not (= |ULTIMATE.start_check_~tmp~1#1| 0))} is VALID [2022-02-20 19:40:12,089 INFO L290 TraceCheckUtils]: 40: Hoare triple {53570#(not (= |ULTIMATE.start_check_~tmp~1#1| 0))} check_#res#1 := check_~tmp~1#1; {53571#(not (= 0 |ULTIMATE.start_check_#res#1|))} is VALID [2022-02-20 19:40:12,090 INFO L290 TraceCheckUtils]: 41: Hoare triple {53571#(not (= 0 |ULTIMATE.start_check_#res#1|))} main1_#t~ret22#1 := check_#res#1;assume { :end_inline_check } true;assume -2147483648 <= main1_#t~ret22#1 && main1_#t~ret22#1 <= 2147483647;main1_~c1~0#1 := main1_#t~ret22#1;havoc main1_#t~ret22#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main1_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; {53572#(and (<= (div |ULTIMATE.start_assert_~arg#1| 256) 0) (<= 1 |ULTIMATE.start_assert_~arg#1|))} is VALID [2022-02-20 19:40:12,090 INFO L290 TraceCheckUtils]: 42: Hoare triple {53572#(and (<= (div |ULTIMATE.start_assert_~arg#1| 256) 0) (<= 1 |ULTIMATE.start_assert_~arg#1|))} assume 0 == assert_~arg#1 % 256; {53566#false} is VALID [2022-02-20 19:40:12,090 INFO L290 TraceCheckUtils]: 43: Hoare triple {53566#false} assume !false; {53566#false} is VALID [2022-02-20 19:40:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:40:12,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:40:12,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528275159] [2022-02-20 19:40:12,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528275159] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:40:12,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:40:12,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-20 19:40:12,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317777832] [2022-02-20 19:40:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:40:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-02-20 19:40:12,092 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:40:12,092 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 19:40:12,119 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:40:12,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-20 19:40:12,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:40:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-20 19:40:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-02-20 19:40:12,120 INFO L87 Difference]: Start difference. First operand 1957 states and 3113 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)