./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/seq-pthread/cs_peterson.i -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 4a8be7009a37d1df58713fd67cd9771c39e6139a0416009824ceb58da10928b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:39:56,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:39:56,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:39:56,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:39:56,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:39:56,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:39:56,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:39:56,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:39:56,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:39:56,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:39:56,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:39:56,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:39:56,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:39:56,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:39:56,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:39:56,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:39:56,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:39:56,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:39:56,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:39:56,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:39:56,830 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:39:56,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:39:56,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:39:56,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:39:56,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:39:56,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:39:56,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:39:56,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:39:56,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:39:56,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:39:56,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:39:56,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:39:56,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:39:56,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:39:56,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:39:56,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:39:56,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:39:56,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:39:56,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:39:56,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:39:56,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:39:56,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:39:56,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:39:56,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:39:56,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:39:56,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:39:56,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:39:56,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:39:56,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:39:56,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:39:56,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:39:56,890 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:39:56,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:39:56,891 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:39:56,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:39:56,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:39:56,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:39:56,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:39:56,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:39:56,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:39:56,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:39:56,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:39:56,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:39:56,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:39:56,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:39:56,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:39:56,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:39:56,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:39:56,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:39:56,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:39:56,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:39:56,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:39:56,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:39:56,895 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:39:56,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:39:56,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:39:56,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8be7009a37d1df58713fd67cd9771c39e6139a0416009824ceb58da10928b7 [2022-07-12 07:39:57,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:39:57,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:39:57,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:39:57,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:39:57,169 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:39:57,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_peterson.i [2022-07-12 07:39:57,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0a14130/b6463bc20ca941bd9590a90ad100abd9/FLAG3fc6657f6 [2022-07-12 07:39:57,770 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:39:57,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_peterson.i [2022-07-12 07:39:57,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0a14130/b6463bc20ca941bd9590a90ad100abd9/FLAG3fc6657f6 [2022-07-12 07:39:58,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0a14130/b6463bc20ca941bd9590a90ad100abd9 [2022-07-12 07:39:58,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:39:58,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:39:58,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:39:58,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:39:58,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:39:58,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79afd65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58, skipping insertion in model container [2022-07-12 07:39:58,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:39:58,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:39:58,542 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/seq-pthread/cs_peterson.i[23605,23618] [2022-07-12 07:39:58,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:39:58,688 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:39:58,720 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/seq-pthread/cs_peterson.i[23605,23618] [2022-07-12 07:39:58,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:39:58,814 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:39:58,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58 WrapperNode [2022-07-12 07:39:58,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:39:58,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:39:58,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:39:58,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:39:58,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,884 INFO L137 Inliner]: procedures = 145, calls = 276, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 428 [2022-07-12 07:39:58,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:39:58,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:39:58,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:39:58,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:39:58,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:39:58,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:39:58,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:39:58,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:39:58,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (1/1) ... [2022-07-12 07:39:58,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:39:59,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:39:59,025 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) [2022-07-12 07:39:59,038 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 [2022-07-12 07:39:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 07:39:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 07:39:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 07:39:59,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 07:39:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:39:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 07:39:59,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 07:39:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-12 07:39:59,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-12 07:39:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 07:39:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-07-12 07:39:59,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-07-12 07:39:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-12 07:39:59,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-12 07:39:59,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 07:39:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 07:39:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-12 07:39:59,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-12 07:39:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:39:59,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:39:59,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:39:59,290 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:39:59,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:40:01,324 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:40:01,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:40:01,330 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 07:40:01,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:40:01 BoogieIcfgContainer [2022-07-12 07:40:01,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:40:01,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:40:01,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:40:01,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:40:01,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:39:58" (1/3) ... [2022-07-12 07:40:01,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448fb8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:40:01, skipping insertion in model container [2022-07-12 07:40:01,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:39:58" (2/3) ... [2022-07-12 07:40:01,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448fb8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:40:01, skipping insertion in model container [2022-07-12 07:40:01,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:40:01" (3/3) ... [2022-07-12 07:40:01,340 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_peterson.i [2022-07-12 07:40:01,352 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:40:01,352 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:40:01,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:40:01,407 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ca0654c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b5617f5 [2022-07-12 07:40:01,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:40:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 07:40:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 07:40:01,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:01,426 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:01,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:01,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1708268069, now seen corresponding path program 1 times [2022-07-12 07:40:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:01,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004990358] [2022-07-12 07:40:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:01,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 07:40:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 07:40:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 07:40:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 07:40:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 07:40:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 07:40:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 07:40:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:40:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:40:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 07:40:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 07:40:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 07:40:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 07:40:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 07:40:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 07:40:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 07:40:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 07:40:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 07:40:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 07:40:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 07:40:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 07:40:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:05,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004990358] [2022-07-12 07:40:05,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004990358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:40:05,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:40:05,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:40:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639977076] [2022-07-12 07:40:05,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:40:05,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:40:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:40:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:05,153 INFO L87 Difference]: Start difference. First operand has 115 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 07:40:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:05,248 INFO L93 Difference]: Finished difference Result 232 states and 370 transitions. [2022-07-12 07:40:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:40:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2022-07-12 07:40:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:05,259 INFO L225 Difference]: With dead ends: 232 [2022-07-12 07:40:05,259 INFO L226 Difference]: Without dead ends: 115 [2022-07-12 07:40:05,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:05,266 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 4 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:05,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 316 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-07-12 07:40:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2022-07-12 07:40:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 72 states have internal predecessors, (91), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 07:40:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 159 transitions. [2022-07-12 07:40:05,315 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 159 transitions. Word has length 132 [2022-07-12 07:40:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:05,315 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 159 transitions. [2022-07-12 07:40:05,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 07:40:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 159 transitions. [2022-07-12 07:40:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 07:40:05,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:05,322 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:40:05,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash -87290515, now seen corresponding path program 1 times [2022-07-12 07:40:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:05,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712971111] [2022-07-12 07:40:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 07:40:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 07:40:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 07:40:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 07:40:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 07:40:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 07:40:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 07:40:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 07:40:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 07:40:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 07:40:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 07:40:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 07:40:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 07:40:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 07:40:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 07:40:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 07:40:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 07:40:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 07:40:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 07:40:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 07:40:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 07:40:06,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:06,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712971111] [2022-07-12 07:40:06,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712971111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:40:06,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:40:06,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:40:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365983672] [2022-07-12 07:40:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:40:06,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:40:06,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:06,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:40:06,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:06,614 INFO L87 Difference]: Start difference. First operand 112 states and 159 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 07:40:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:06,652 INFO L93 Difference]: Finished difference Result 223 states and 318 transitions. [2022-07-12 07:40:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:40:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2022-07-12 07:40:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:06,657 INFO L225 Difference]: With dead ends: 223 [2022-07-12 07:40:06,658 INFO L226 Difference]: Without dead ends: 114 [2022-07-12 07:40:06,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:06,668 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:06,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-07-12 07:40:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-07-12 07:40:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 07:40:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 160 transitions. [2022-07-12 07:40:06,680 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 160 transitions. Word has length 135 [2022-07-12 07:40:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:06,682 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 160 transitions. [2022-07-12 07:40:06,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 07:40:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 160 transitions. [2022-07-12 07:40:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 07:40:06,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:06,685 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:06,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:40:06,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1055313711, now seen corresponding path program 1 times [2022-07-12 07:40:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:06,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884122320] [2022-07-12 07:40:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 07:40:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 07:40:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 07:40:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:40:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:40:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 07:40:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 07:40:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 07:40:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:40:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:40:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 07:40:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 07:40:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 07:40:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 07:40:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 07:40:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 07:40:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 07:40:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 07:40:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 07:40:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 07:40:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 07:40:08,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884122320] [2022-07-12 07:40:08,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884122320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:40:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611429344] [2022-07-12 07:40:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:08,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:08,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:40:08,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:40:08,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:40:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:14,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 18469 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 07:40:14,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:40:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 07:40:14,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:40:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 07:40:14,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611429344] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:40:14,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:40:14,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 07:40:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621853615] [2022-07-12 07:40:14,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:40:14,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:40:14,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:40:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:40:14,411 INFO L87 Difference]: Start difference. First operand 113 states and 160 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2022-07-12 07:40:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:14,449 INFO L93 Difference]: Finished difference Result 227 states and 323 transitions. [2022-07-12 07:40:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:40:14,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 137 [2022-07-12 07:40:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:14,451 INFO L225 Difference]: With dead ends: 227 [2022-07-12 07:40:14,451 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 07:40:14,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:40:14,453 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 3 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:14,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 462 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 07:40:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-12 07:40:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 77 states have internal predecessors, (96), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 07:40:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 164 transitions. [2022-07-12 07:40:14,463 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 164 transitions. Word has length 137 [2022-07-12 07:40:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:14,464 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 164 transitions. [2022-07-12 07:40:14,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2022-07-12 07:40:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 164 transitions. [2022-07-12 07:40:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 07:40:14,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:14,466 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:14,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 07:40:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:14,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash 953694515, now seen corresponding path program 2 times [2022-07-12 07:40:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209777643] [2022-07-12 07:40:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 07:40:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 07:40:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 07:40:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 07:40:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 07:40:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 07:40:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 07:40:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 07:40:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 07:40:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 07:40:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 07:40:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 07:40:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 07:40:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 07:40:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 07:40:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 07:40:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 07:40:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 07:40:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 07:40:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 07:40:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2022-07-12 07:40:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:17,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209777643] [2022-07-12 07:40:17,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209777643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:40:17,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739397508] [2022-07-12 07:40:17,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 07:40:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:17,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:40:17,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:40:17,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 07:40:46,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 07:40:46,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 07:40:46,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 18077 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 07:40:46,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:40:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-12 07:40:46,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 07:40:46,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739397508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:40:46,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 07:40:46,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 07:40:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160515983] [2022-07-12 07:40:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:40:46,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:40:46,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:46,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:40:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:40:46,837 INFO L87 Difference]: Start difference. First operand 117 states and 164 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 07:40:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:46,866 INFO L93 Difference]: Finished difference Result 219 states and 314 transitions. [2022-07-12 07:40:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:40:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2022-07-12 07:40:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:46,870 INFO L225 Difference]: With dead ends: 219 [2022-07-12 07:40:46,870 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 07:40:46,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:40:46,871 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 77 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:46,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 550 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 07:40:46,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-12 07:40:46,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 115 states have internal predecessors, (148), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2022-07-12 07:40:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 246 transitions. [2022-07-12 07:40:46,888 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 246 transitions. Word has length 141 [2022-07-12 07:40:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:46,888 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 246 transitions. [2022-07-12 07:40:46,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 07:40:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 246 transitions. [2022-07-12 07:40:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-12 07:40:46,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:46,892 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:46,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 07:40:47,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 07:40:47,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1512555135, now seen corresponding path program 1 times [2022-07-12 07:40:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:47,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891170461] [2022-07-12 07:40:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 07:40:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:40:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:40:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 07:40:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 07:40:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:40:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:40:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:40:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:40:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:40:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:40:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:40:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 07:40:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 07:40:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 07:40:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 07:40:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 07:40:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 07:40:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 07:40:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 07:40:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 07:40:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 07:40:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 07:40:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 07:40:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 07:40:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 07:40:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 07:40:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 07:40:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 07:40:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 07:40:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 07:40:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 07:40:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2022-07-12 07:40:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891170461] [2022-07-12 07:40:49,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891170461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:40:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501932760] [2022-07-12 07:40:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:40:49,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:40:49,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 07:40:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:56,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 18946 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 07:40:56,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:40:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2022-07-12 07:40:56,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:40:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2022-07-12 07:40:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501932760] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:40:57,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:40:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-07-12 07:40:57,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658202944] [2022-07-12 07:40:57,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:40:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:40:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:40:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:40:57,052 INFO L87 Difference]: Start difference. First operand 173 states and 246 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (66), 6 states have call predecessors, (66), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 07:40:59,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:41:01,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:41:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:41:01,717 INFO L93 Difference]: Finished difference Result 362 states and 514 transitions. [2022-07-12 07:41:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 07:41:01,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (66), 6 states have call predecessors, (66), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 218 [2022-07-12 07:41:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:41:01,720 INFO L225 Difference]: With dead ends: 362 [2022-07-12 07:41:01,720 INFO L226 Difference]: Without dead ends: 201 [2022-07-12 07:41:01,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:41:01,722 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 79 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 147 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:41:01,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 553 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 402 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-07-12 07:41:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-12 07:41:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 196. [2022-07-12 07:41:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 138 states have internal predecessors, (171), 47 states have call successors, (47), 10 states have call predecessors, (47), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-07-12 07:41:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 273 transitions. [2022-07-12 07:41:01,740 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 273 transitions. Word has length 218 [2022-07-12 07:41:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:41:01,740 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 273 transitions. [2022-07-12 07:41:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (66), 6 states have call predecessors, (66), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-07-12 07:41:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 273 transitions. [2022-07-12 07:41:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-12 07:41:01,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:41:01,744 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:41:01,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 07:41:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:01,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:41:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:41:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1896156545, now seen corresponding path program 2 times [2022-07-12 07:41:01,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:41:01,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661726442] [2022-07-12 07:41:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:41:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 07:41:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 07:41:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 07:41:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:41:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:41:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:41:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:41:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 07:41:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 07:41:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 07:41:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 07:41:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 07:41:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 07:41:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 07:41:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 07:41:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 07:41:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-12 07:41:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-12 07:41:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 07:41:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-12 07:41:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 07:41:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-12 07:41:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-12 07:41:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 07:41:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 07:41:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 07:41:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-12 07:41:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2022-07-12 07:41:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:41:11,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661726442] [2022-07-12 07:41:11,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661726442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:41:11,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918551898] [2022-07-12 07:41:11,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 07:41:11,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:11,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:41:11,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:41:11,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 07:41:37,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 07:41:37,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 07:41:37,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 18163 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 07:41:38,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:41:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2022-07-12 07:41:38,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 07:41:38,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918551898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:41:38,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 07:41:38,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-12 07:41:38,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379781660] [2022-07-12 07:41:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:41:38,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:41:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:41:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:41:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:41:38,031 INFO L87 Difference]: Start difference. First operand 196 states and 273 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-07-12 07:41:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:41:38,047 INFO L93 Difference]: Finished difference Result 352 states and 494 transitions. [2022-07-12 07:41:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:41:38,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 236 [2022-07-12 07:41:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:41:38,049 INFO L225 Difference]: With dead ends: 352 [2022-07-12 07:41:38,049 INFO L226 Difference]: Without dead ends: 196 [2022-07-12 07:41:38,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:41:38,051 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:41:38,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:41:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-12 07:41:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-07-12 07:41:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 136 states have (on average 1.25) internal successors, (170), 138 states have internal predecessors, (170), 47 states have call successors, (47), 10 states have call predecessors, (47), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-07-12 07:41:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 272 transitions. [2022-07-12 07:41:38,066 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 272 transitions. Word has length 236 [2022-07-12 07:41:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:41:38,066 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 272 transitions. [2022-07-12 07:41:38,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-07-12 07:41:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 272 transitions. [2022-07-12 07:41:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-12 07:41:38,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:41:38,070 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:41:38,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 07:41:38,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:38,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:41:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:41:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -252779862, now seen corresponding path program 1 times [2022-07-12 07:41:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:41:38,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425296963] [2022-07-12 07:41:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:41:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 07:41:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 07:41:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 07:41:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 07:41:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:41:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:41:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:41:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:41:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 07:41:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 07:41:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 07:41:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 07:41:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 07:41:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 07:41:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 07:41:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 07:41:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 07:41:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 07:41:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-12 07:41:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 07:41:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 07:41:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 07:41:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 07:41:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 07:41:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-12 07:41:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-12 07:41:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-12 07:41:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 07:41:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-07-12 07:41:48,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:41:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425296963] [2022-07-12 07:41:48,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425296963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:41:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931456610] [2022-07-12 07:41:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:48,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:48,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:41:48,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:41:48,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 07:41:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:56,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 19449 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 07:41:56,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:41:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 473 proven. 6 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2022-07-12 07:41:56,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:41:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2022-07-12 07:41:57,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931456610] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:41:57,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:41:57,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 22 [2022-07-12 07:41:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251024140] [2022-07-12 07:41:57,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:41:57,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 07:41:57,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:41:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 07:41:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:41:57,263 INFO L87 Difference]: Start difference. First operand 196 states and 272 transitions. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 17 states have internal predecessors, (128), 7 states have call successors, (66), 7 states have call predecessors, (66), 11 states have return successors, (68), 11 states have call predecessors, (68), 7 states have call successors, (68) [2022-07-12 07:41:59,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:01,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:03,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:42:13,620 INFO L93 Difference]: Finished difference Result 1618 states and 2507 transitions. [2022-07-12 07:42:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-07-12 07:42:13,620 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 17 states have internal predecessors, (128), 7 states have call successors, (66), 7 states have call predecessors, (66), 11 states have return successors, (68), 11 states have call predecessors, (68), 7 states have call successors, (68) Word has length 256 [2022-07-12 07:42:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:42:13,632 INFO L225 Difference]: With dead ends: 1618 [2022-07-12 07:42:13,632 INFO L226 Difference]: Without dead ends: 1455 [2022-07-12 07:42:13,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 630 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6818 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2494, Invalid=15596, Unknown=0, NotChecked=0, Total=18090 [2022-07-12 07:42:13,641 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1533 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 2335 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 7088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2335 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:42:13,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2070 Invalid, 7088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2335 Valid, 4750 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2022-07-12 07:42:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2022-07-12 07:42:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1283. [2022-07-12 07:42:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 837 states have (on average 1.2150537634408602) internal successors, (1017), 825 states have internal predecessors, (1017), 331 states have call successors, (331), 70 states have call predecessors, (331), 114 states have return successors, (605), 387 states have call predecessors, (605), 331 states have call successors, (605) [2022-07-12 07:42:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1953 transitions. [2022-07-12 07:42:13,792 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1953 transitions. Word has length 256 [2022-07-12 07:42:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:42:13,792 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1953 transitions. [2022-07-12 07:42:13,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 17 states have internal predecessors, (128), 7 states have call successors, (66), 7 states have call predecessors, (66), 11 states have return successors, (68), 11 states have call predecessors, (68), 7 states have call successors, (68) [2022-07-12 07:42:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1953 transitions. [2022-07-12 07:42:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-12 07:42:13,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:42:13,807 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:42:13,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 07:42:14,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:42:14,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:42:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:42:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash -446491665, now seen corresponding path program 1 times [2022-07-12 07:42:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:42:14,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652361297] [2022-07-12 07:42:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:42:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 07:42:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 07:42:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 07:42:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 07:42:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:42:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:42:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:42:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:42:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 07:42:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 07:42:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 07:42:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 07:42:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 07:42:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 07:42:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 07:42:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 07:42:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 07:42:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 07:42:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-12 07:42:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 07:42:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 07:42:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 07:42:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 07:42:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-12 07:42:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-12 07:42:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-12 07:42:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-12 07:42:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 07:42:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1375 trivial. 0 not checked. [2022-07-12 07:42:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:42:25,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652361297] [2022-07-12 07:42:25,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652361297] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:42:25,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082650468] [2022-07-12 07:42:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:42:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:42:25,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:42:25,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 07:42:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:34,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 19509 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 07:42:34,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:42:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 466 proven. 5 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2022-07-12 07:42:35,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:42:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2022-07-12 07:42:35,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082650468] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:42:35,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:42:35,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2022-07-12 07:42:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673869572] [2022-07-12 07:42:35,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:42:35,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 07:42:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:42:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 07:42:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-07-12 07:42:35,607 INFO L87 Difference]: Start difference. First operand 1283 states and 1953 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 22 states have internal predecessors, (143), 14 states have call successors, (69), 10 states have call predecessors, (69), 14 states have return successors, (70), 15 states have call predecessors, (70), 14 states have call successors, (70) [2022-07-12 07:42:37,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:39,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:41,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:43,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:45,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:42:53,723 INFO L93 Difference]: Finished difference Result 3383 states and 5176 transitions. [2022-07-12 07:42:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-12 07:42:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 22 states have internal predecessors, (143), 14 states have call successors, (69), 10 states have call predecessors, (69), 14 states have return successors, (70), 15 states have call predecessors, (70), 14 states have call successors, (70) Word has length 256 [2022-07-12 07:42:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:42:53,737 INFO L225 Difference]: With dead ends: 3383 [2022-07-12 07:42:53,737 INFO L226 Difference]: Without dead ends: 2087 [2022-07-12 07:42:53,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 583 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1125, Invalid=6885, Unknown=0, NotChecked=0, Total=8010 [2022-07-12 07:42:53,748 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 977 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 5931 mSolverCounterSat, 1264 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 7200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1264 IncrementalHoareTripleChecker+Valid, 5931 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:42:53,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 2523 Invalid, 7200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1264 Valid, 5931 Invalid, 5 Unknown, 0 Unchecked, 15.6s Time] [2022-07-12 07:42:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2022-07-12 07:42:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1681. [2022-07-12 07:42:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1130 states have (on average 1.1752212389380532) internal successors, (1328), 1119 states have internal predecessors, (1328), 371 states have call successors, (371), 115 states have call predecessors, (371), 179 states have return successors, (724), 446 states have call predecessors, (724), 371 states have call successors, (724) [2022-07-12 07:42:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2423 transitions. [2022-07-12 07:42:53,878 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2423 transitions. Word has length 256 [2022-07-12 07:42:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:42:53,878 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2423 transitions. [2022-07-12 07:42:53,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 22 states have internal predecessors, (143), 14 states have call successors, (69), 10 states have call predecessors, (69), 14 states have return successors, (70), 15 states have call predecessors, (70), 14 states have call successors, (70) [2022-07-12 07:42:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2423 transitions. [2022-07-12 07:42:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-12 07:42:53,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:42:53,890 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:42:53,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 07:42:54,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:42:54,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:42:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:42:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1344466568, now seen corresponding path program 1 times [2022-07-12 07:42:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:42:54,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881244618] [2022-07-12 07:42:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:54,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms