./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/openssl/s3_srvr.blast.11.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2558e20908ca51bd715f698f032e0721784debd5f3c1dc69de7f261de8133a0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:04:28,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:04:28,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:04:28,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:04:28,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:04:28,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:04:28,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:04:28,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:04:28,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:04:28,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:04:28,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:04:28,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:04:28,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:04:28,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:04:28,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:04:28,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:04:28,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:04:28,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:04:28,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:04:28,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:04:28,752 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:04:28,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:04:28,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:04:28,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:04:28,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:04:28,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:04:28,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:04:28,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:04:28,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:04:28,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:04:28,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:04:28,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:04:28,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:04:28,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:04:28,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:04:28,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:04:28,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:04:28,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:04:28,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:04:28,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:04:28,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:04:28,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:04:28,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:04:28,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:04:28,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:04:28,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:04:28,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:04:28,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:04:28,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:04:28,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:04:28,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:04:28,811 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:04:28,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:04:28,812 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:04:28,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:04:28,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:04:28,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:04:28,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:04:28,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:04:28,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:04:28,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:04:28,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:04:28,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:04:28,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:04:28,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:04:28,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:04:28,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:04:28,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:04:28,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:04:28,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:04:28,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:04:28,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:04:28,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:04:28,817 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:04:28,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:04:28,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:04:28,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2558e20908ca51bd715f698f032e0721784debd5f3c1dc69de7f261de8133a0 [2022-07-19 11:04:29,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:04:29,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:04:29,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:04:29,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:04:29,075 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:04:29,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c [2022-07-19 11:04:29,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46ecfd0b/4836159fd38a44439364250f6b4a974f/FLAG049126f26 [2022-07-19 11:04:29,656 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:04:29,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c [2022-07-19 11:04:29,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46ecfd0b/4836159fd38a44439364250f6b4a974f/FLAG049126f26 [2022-07-19 11:04:29,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46ecfd0b/4836159fd38a44439364250f6b4a974f [2022-07-19 11:04:29,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:04:29,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:04:29,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:04:29,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:04:29,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:04:29,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:04:29" (1/1) ... [2022-07-19 11:04:29,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5218f38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:29, skipping insertion in model container [2022-07-19 11:04:29,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:04:29" (1/1) ... [2022-07-19 11:04:29,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:04:29,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:04:30,379 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/openssl/s3_srvr.blast.11.i.cil-2.c[74369,74382] [2022-07-19 11:04:30,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:04:30,406 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:04:30,479 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/openssl/s3_srvr.blast.11.i.cil-2.c[74369,74382] [2022-07-19 11:04:30,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:04:30,494 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:04:30,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30 WrapperNode [2022-07-19 11:04:30,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:04:30,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:04:30,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:04:30,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:04:30,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,582 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 792 [2022-07-19 11:04:30,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:04:30,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:04:30,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:04:30,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:04:30,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:04:30,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:04:30,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:04:30,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:04:30,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (1/1) ... [2022-07-19 11:04:30,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:04:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:30,728 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) [2022-07-19 11:04:30,749 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 [2022-07-19 11:04:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 11:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 11:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 11:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 11:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:04:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 11:04:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:04:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:04:30,974 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:04:30,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:04:30,999 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-19 11:04:32,714 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-19 11:04:32,714 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-19 11:04:32,714 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:04:32,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:04:32,720 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:04:32,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:04:32 BoogieIcfgContainer [2022-07-19 11:04:32,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:04:32,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:04:32,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:04:32,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:04:32,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:04:29" (1/3) ... [2022-07-19 11:04:32,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65daf4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:04:32, skipping insertion in model container [2022-07-19 11:04:32,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:30" (2/3) ... [2022-07-19 11:04:32,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65daf4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:04:32, skipping insertion in model container [2022-07-19 11:04:32,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:04:32" (3/3) ... [2022-07-19 11:04:32,729 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-2.c [2022-07-19 11:04:32,740 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:04:32,741 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:04:32,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:04:32,788 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@4db1480b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f340716 [2022-07-19 11:04:32,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:04:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-19 11:04:32,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:32,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:32,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -442385417, now seen corresponding path program 1 times [2022-07-19 11:04:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643473050] [2022-07-19 11:04:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643473050] [2022-07-19 11:04:33,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643473050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:33,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:33,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539452443] [2022-07-19 11:04:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:33,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:33,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:33,324 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:33,967 INFO L93 Difference]: Finished difference Result 421 states and 717 transitions. [2022-07-19 11:04:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:33,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-07-19 11:04:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:33,979 INFO L225 Difference]: With dead ends: 421 [2022-07-19 11:04:33,979 INFO L226 Difference]: Without dead ends: 256 [2022-07-19 11:04:33,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:33,985 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 169 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:33,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 439 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:33,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-19 11:04:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 165. [2022-07-19 11:04:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5853658536585367) internal successors, (260), 164 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 260 transitions. [2022-07-19 11:04:34,030 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 260 transitions. Word has length 37 [2022-07-19 11:04:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:34,030 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 260 transitions. [2022-07-19 11:04:34,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 260 transitions. [2022-07-19 11:04:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 11:04:34,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:34,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:04:34,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1559591931, now seen corresponding path program 1 times [2022-07-19 11:04:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:34,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014518932] [2022-07-19 11:04:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:34,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:34,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014518932] [2022-07-19 11:04:34,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014518932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:34,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:34,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195339003] [2022-07-19 11:04:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:34,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:34,178 INFO L87 Difference]: Start difference. First operand 165 states and 260 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:34,864 INFO L93 Difference]: Finished difference Result 439 states and 692 transitions. [2022-07-19 11:04:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:34,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-19 11:04:34,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:34,866 INFO L225 Difference]: With dead ends: 439 [2022-07-19 11:04:34,866 INFO L226 Difference]: Without dead ends: 284 [2022-07-19 11:04:34,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:34,868 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 134 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:34,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-19 11:04:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 194. [2022-07-19 11:04:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.616580310880829) internal successors, (312), 193 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 312 transitions. [2022-07-19 11:04:34,881 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 312 transitions. Word has length 38 [2022-07-19 11:04:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:34,882 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 312 transitions. [2022-07-19 11:04:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 312 transitions. [2022-07-19 11:04:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 11:04:34,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:34,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:34,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:04:34,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:34,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:34,885 INFO L85 PathProgramCache]: Analyzing trace with hash 917746377, now seen corresponding path program 1 times [2022-07-19 11:04:34,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:34,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7629234] [2022-07-19 11:04:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:35,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7629234] [2022-07-19 11:04:35,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7629234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:35,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:35,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583061773] [2022-07-19 11:04:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:35,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:35,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:35,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:35,036 INFO L87 Difference]: Start difference. First operand 194 states and 312 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:35,680 INFO L93 Difference]: Finished difference Result 406 states and 651 transitions. [2022-07-19 11:04:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:35,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-19 11:04:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:35,683 INFO L225 Difference]: With dead ends: 406 [2022-07-19 11:04:35,683 INFO L226 Difference]: Without dead ends: 222 [2022-07-19 11:04:35,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:35,685 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:35,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-19 11:04:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-07-19 11:04:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6225490196078431) internal successors, (331), 204 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 331 transitions. [2022-07-19 11:04:35,693 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 331 transitions. Word has length 44 [2022-07-19 11:04:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:35,694 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 331 transitions. [2022-07-19 11:04:35,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 331 transitions. [2022-07-19 11:04:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 11:04:35,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:35,696 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:35,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:04:35,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash 868700126, now seen corresponding path program 1 times [2022-07-19 11:04:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276221017] [2022-07-19 11:04:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:35,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276221017] [2022-07-19 11:04:35,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276221017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:35,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:35,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:35,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822686615] [2022-07-19 11:04:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:35,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:35,803 INFO L87 Difference]: Start difference. First operand 205 states and 331 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:36,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:36,232 INFO L93 Difference]: Finished difference Result 406 states and 650 transitions. [2022-07-19 11:04:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:36,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-19 11:04:36,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:36,234 INFO L225 Difference]: With dead ends: 406 [2022-07-19 11:04:36,234 INFO L226 Difference]: Without dead ends: 222 [2022-07-19 11:04:36,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:36,236 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 471 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:04:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-19 11:04:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-07-19 11:04:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6176470588235294) internal successors, (330), 204 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 330 transitions. [2022-07-19 11:04:36,243 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 330 transitions. Word has length 57 [2022-07-19 11:04:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:36,244 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 330 transitions. [2022-07-19 11:04:36,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 330 transitions. [2022-07-19 11:04:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:36,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:36,245 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:04:36,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash 642771885, now seen corresponding path program 1 times [2022-07-19 11:04:36,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:36,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329042053] [2022-07-19 11:04:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:36,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:36,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329042053] [2022-07-19 11:04:36,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329042053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:36,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:36,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830957216] [2022-07-19 11:04:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:36,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:36,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:36,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:36,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:36,378 INFO L87 Difference]: Start difference. First operand 205 states and 330 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:37,036 INFO L93 Difference]: Finished difference Result 405 states and 648 transitions. [2022-07-19 11:04:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 11:04:37,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:37,038 INFO L225 Difference]: With dead ends: 405 [2022-07-19 11:04:37,038 INFO L226 Difference]: Without dead ends: 221 [2022-07-19 11:04:37,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:37,039 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 28 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:37,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-19 11:04:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-07-19 11:04:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6127450980392157) internal successors, (329), 204 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 329 transitions. [2022-07-19 11:04:37,048 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 329 transitions. Word has length 58 [2022-07-19 11:04:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:37,049 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 329 transitions. [2022-07-19 11:04:37,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 329 transitions. [2022-07-19 11:04:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:37,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:37,057 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:04:37,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash -404738919, now seen corresponding path program 1 times [2022-07-19 11:04:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864126005] [2022-07-19 11:04:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:37,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:37,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864126005] [2022-07-19 11:04:37,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864126005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:37,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:37,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138813192] [2022-07-19 11:04:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:37,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:37,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:37,226 INFO L87 Difference]: Start difference. First operand 205 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:37,886 INFO L93 Difference]: Finished difference Result 479 states and 760 transitions. [2022-07-19 11:04:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:37,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 11:04:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:37,888 INFO L225 Difference]: With dead ends: 479 [2022-07-19 11:04:37,888 INFO L226 Difference]: Without dead ends: 295 [2022-07-19 11:04:37,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:37,889 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 150 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:37,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-19 11:04:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 205. [2022-07-19 11:04:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5980392156862746) internal successors, (326), 204 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2022-07-19 11:04:37,895 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 58 [2022-07-19 11:04:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:37,895 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2022-07-19 11:04:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2022-07-19 11:04:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:37,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:37,897 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:37,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:04:37,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1540605214, now seen corresponding path program 1 times [2022-07-19 11:04:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:37,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338737219] [2022-07-19 11:04:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:38,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338737219] [2022-07-19 11:04:38,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338737219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:38,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:38,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:38,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603073525] [2022-07-19 11:04:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:38,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:38,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:38,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:38,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:38,019 INFO L87 Difference]: Start difference. First operand 205 states and 326 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:38,815 INFO L93 Difference]: Finished difference Result 478 states and 754 transitions. [2022-07-19 11:04:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:38,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 11:04:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:38,817 INFO L225 Difference]: With dead ends: 478 [2022-07-19 11:04:38,817 INFO L226 Difference]: Without dead ends: 294 [2022-07-19 11:04:38,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:38,818 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:38,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-19 11:04:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-19 11:04:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5833333333333333) internal successors, (323), 204 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2022-07-19 11:04:38,825 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 58 [2022-07-19 11:04:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:38,825 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2022-07-19 11:04:38,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2022-07-19 11:04:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:38,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:38,827 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:38,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:04:38,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:38,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:38,827 INFO L85 PathProgramCache]: Analyzing trace with hash -219751902, now seen corresponding path program 1 times [2022-07-19 11:04:38,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411549236] [2022-07-19 11:04:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:38,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:38,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:38,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411549236] [2022-07-19 11:04:38,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411549236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:38,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:38,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792240605] [2022-07-19 11:04:38,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:38,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:38,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:38,941 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:39,491 INFO L93 Difference]: Finished difference Result 478 states and 749 transitions. [2022-07-19 11:04:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:39,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 11:04:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:39,493 INFO L225 Difference]: With dead ends: 478 [2022-07-19 11:04:39,493 INFO L226 Difference]: Without dead ends: 294 [2022-07-19 11:04:39,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:39,494 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:39,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-19 11:04:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-19 11:04:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 204 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2022-07-19 11:04:39,502 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 58 [2022-07-19 11:04:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:39,502 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2022-07-19 11:04:39,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2022-07-19 11:04:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:04:39,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:39,503 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:39,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:04:39,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:39,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1716593643, now seen corresponding path program 1 times [2022-07-19 11:04:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:39,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272224667] [2022-07-19 11:04:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:39,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:39,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272224667] [2022-07-19 11:04:39,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272224667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:39,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:39,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162698851] [2022-07-19 11:04:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:39,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:39,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:39,599 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:40,325 INFO L93 Difference]: Finished difference Result 478 states and 744 transitions. [2022-07-19 11:04:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 11:04:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:40,328 INFO L225 Difference]: With dead ends: 478 [2022-07-19 11:04:40,328 INFO L226 Difference]: Without dead ends: 294 [2022-07-19 11:04:40,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:40,329 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 146 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:40,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-19 11:04:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-19 11:04:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.553921568627451) internal successors, (317), 204 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2022-07-19 11:04:40,335 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 317 transitions. Word has length 59 [2022-07-19 11:04:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:40,336 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 317 transitions. [2022-07-19 11:04:40,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 317 transitions. [2022-07-19 11:04:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 11:04:40,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:40,337 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:40,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:04:40,337 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1056186316, now seen corresponding path program 1 times [2022-07-19 11:04:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:40,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679229246] [2022-07-19 11:04:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679229246] [2022-07-19 11:04:40,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679229246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:40,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:40,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490775297] [2022-07-19 11:04:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:40,423 INFO L87 Difference]: Start difference. First operand 205 states and 317 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:40,972 INFO L93 Difference]: Finished difference Result 402 states and 624 transitions. [2022-07-19 11:04:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-19 11:04:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:40,974 INFO L225 Difference]: With dead ends: 402 [2022-07-19 11:04:40,974 INFO L226 Difference]: Without dead ends: 218 [2022-07-19 11:04:40,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:40,976 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 20 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:40,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-19 11:04:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 205. [2022-07-19 11:04:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 204 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 316 transitions. [2022-07-19 11:04:40,981 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 316 transitions. Word has length 60 [2022-07-19 11:04:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:40,982 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 316 transitions. [2022-07-19 11:04:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 316 transitions. [2022-07-19 11:04:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 11:04:40,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:40,982 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:40,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:04:40,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash 614802448, now seen corresponding path program 1 times [2022-07-19 11:04:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881358403] [2022-07-19 11:04:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:41,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881358403] [2022-07-19 11:04:41,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881358403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848057664] [2022-07-19 11:04:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:41,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:41,071 INFO L87 Difference]: Start difference. First operand 205 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,643 INFO L93 Difference]: Finished difference Result 478 states and 738 transitions. [2022-07-19 11:04:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:41,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-19 11:04:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,644 INFO L225 Difference]: With dead ends: 478 [2022-07-19 11:04:41,644 INFO L226 Difference]: Without dead ends: 294 [2022-07-19 11:04:41,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:41,645 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-19 11:04:41,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-19 11:04:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5343137254901962) internal successors, (313), 204 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 313 transitions. [2022-07-19 11:04:41,652 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 313 transitions. Word has length 61 [2022-07-19 11:04:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,652 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 313 transitions. [2022-07-19 11:04:41,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 313 transitions. [2022-07-19 11:04:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 11:04:41,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,653 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-07-19 11:04:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:04:41,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1287801256, now seen corresponding path program 1 times [2022-07-19 11:04:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084946428] [2022-07-19 11:04:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:41,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084946428] [2022-07-19 11:04:41,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084946428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037395929] [2022-07-19 11:04:41,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:41,764 INFO L87 Difference]: Start difference. First operand 205 states and 313 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:43,173 INFO L93 Difference]: Finished difference Result 508 states and 780 transitions. [2022-07-19 11:04:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-19 11:04:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:43,175 INFO L225 Difference]: With dead ends: 508 [2022-07-19 11:04:43,175 INFO L226 Difference]: Without dead ends: 324 [2022-07-19 11:04:43,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:43,176 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 119 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:43,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-19 11:04:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 245. [2022-07-19 11:04:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.5532786885245902) internal successors, (379), 244 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 379 transitions. [2022-07-19 11:04:43,182 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 379 transitions. Word has length 61 [2022-07-19 11:04:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:43,183 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 379 transitions. [2022-07-19 11:04:43,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2022-07-19 11:04:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 11:04:43,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:43,185 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-07-19 11:04:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:04:43,185 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1049026987, now seen corresponding path program 1 times [2022-07-19 11:04:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:43,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299932587] [2022-07-19 11:04:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:43,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:43,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299932587] [2022-07-19 11:04:43,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299932587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:43,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:43,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362894019] [2022-07-19 11:04:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:43,285 INFO L87 Difference]: Start difference. First operand 245 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:45,138 INFO L93 Difference]: Finished difference Result 511 states and 793 transitions. [2022-07-19 11:04:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 11:04:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:45,141 INFO L225 Difference]: With dead ends: 511 [2022-07-19 11:04:45,141 INFO L226 Difference]: Without dead ends: 287 [2022-07-19 11:04:45,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:45,142 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 29 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:45,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 493 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:04:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-19 11:04:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 267. [2022-07-19 11:04:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5488721804511278) internal successors, (412), 266 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 412 transitions. [2022-07-19 11:04:45,148 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 412 transitions. Word has length 62 [2022-07-19 11:04:45,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:45,148 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 412 transitions. [2022-07-19 11:04:45,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 412 transitions. [2022-07-19 11:04:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 11:04:45,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:45,149 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:04:45,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1947485908, now seen corresponding path program 1 times [2022-07-19 11:04:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111830732] [2022-07-19 11:04:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:45,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:45,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111830732] [2022-07-19 11:04:45,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111830732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:45,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:45,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264632084] [2022-07-19 11:04:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:45,275 INFO L87 Difference]: Start difference. First operand 267 states and 412 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:46,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:46,991 INFO L93 Difference]: Finished difference Result 531 states and 823 transitions. [2022-07-19 11:04:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-19 11:04:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:46,993 INFO L225 Difference]: With dead ends: 531 [2022-07-19 11:04:46,993 INFO L226 Difference]: Without dead ends: 285 [2022-07-19 11:04:46,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:46,994 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 34 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:46,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 497 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:04:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-19 11:04:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 267. [2022-07-19 11:04:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5451127819548873) internal successors, (411), 266 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 411 transitions. [2022-07-19 11:04:47,000 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 411 transitions. Word has length 75 [2022-07-19 11:04:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:47,000 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 411 transitions. [2022-07-19 11:04:47,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 411 transitions. [2022-07-19 11:04:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 11:04:47,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:47,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2022-07-19 11:04:47,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:04:47,001 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -655331449, now seen corresponding path program 1 times [2022-07-19 11:04:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:47,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170414354] [2022-07-19 11:04:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:47,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:47,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170414354] [2022-07-19 11:04:47,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170414354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:47,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:47,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066219925] [2022-07-19 11:04:47,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:47,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:47,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:47,088 INFO L87 Difference]: Start difference. First operand 267 states and 411 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:47,596 INFO L93 Difference]: Finished difference Result 530 states and 820 transitions. [2022-07-19 11:04:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-19 11:04:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:47,598 INFO L225 Difference]: With dead ends: 530 [2022-07-19 11:04:47,598 INFO L226 Difference]: Without dead ends: 284 [2022-07-19 11:04:47,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:47,599 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 38 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:47,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-19 11:04:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2022-07-19 11:04:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5413533834586466) internal successors, (410), 266 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 410 transitions. [2022-07-19 11:04:47,605 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 410 transitions. Word has length 76 [2022-07-19 11:04:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:47,606 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 410 transitions. [2022-07-19 11:04:47,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 410 transitions. [2022-07-19 11:04:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 11:04:47,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:47,607 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 11:04:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:04:47,607 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:47,607 INFO L85 PathProgramCache]: Analyzing trace with hash 280248224, now seen corresponding path program 1 times [2022-07-19 11:04:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:47,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913647433] [2022-07-19 11:04:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:47,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913647433] [2022-07-19 11:04:47,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913647433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:47,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:47,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084917634] [2022-07-19 11:04:47,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:47,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:47,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:47,709 INFO L87 Difference]: Start difference. First operand 267 states and 410 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:48,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:49,097 INFO L93 Difference]: Finished difference Result 602 states and 927 transitions. [2022-07-19 11:04:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:49,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-19 11:04:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:49,099 INFO L225 Difference]: With dead ends: 602 [2022-07-19 11:04:49,099 INFO L226 Difference]: Without dead ends: 356 [2022-07-19 11:04:49,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:49,101 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 144 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:49,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 334 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-19 11:04:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 267. [2022-07-19 11:04:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5263157894736843) internal successors, (406), 266 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 406 transitions. [2022-07-19 11:04:49,107 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 406 transitions. Word has length 78 [2022-07-19 11:04:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:49,107 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 406 transitions. [2022-07-19 11:04:49,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 406 transitions. [2022-07-19 11:04:49,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 11:04:49,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:49,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:49,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:04:49,109 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1344832479, now seen corresponding path program 1 times [2022-07-19 11:04:49,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:49,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181908016] [2022-07-19 11:04:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:49,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:49,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:49,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181908016] [2022-07-19 11:04:49,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181908016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:49,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:49,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:49,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610571462] [2022-07-19 11:04:49,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:49,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:49,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:49,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:49,206 INFO L87 Difference]: Start difference. First operand 267 states and 406 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:50,489 INFO L93 Difference]: Finished difference Result 603 states and 918 transitions. [2022-07-19 11:04:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:50,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-19 11:04:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:50,493 INFO L225 Difference]: With dead ends: 603 [2022-07-19 11:04:50,493 INFO L226 Difference]: Without dead ends: 357 [2022-07-19 11:04:50,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:50,494 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 67 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:50,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 469 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:04:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-07-19 11:04:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 309. [2022-07-19 11:04:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.5357142857142858) internal successors, (473), 308 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 473 transitions. [2022-07-19 11:04:50,501 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 473 transitions. Word has length 84 [2022-07-19 11:04:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:50,501 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 473 transitions. [2022-07-19 11:04:50,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 473 transitions. [2022-07-19 11:04:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 11:04:50,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:50,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:50,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:04:50,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash -921185757, now seen corresponding path program 1 times [2022-07-19 11:04:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:50,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423798791] [2022-07-19 11:04:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:50,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:50,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423798791] [2022-07-19 11:04:50,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423798791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:50,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:50,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:50,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717195147] [2022-07-19 11:04:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:50,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:50,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:50,597 INFO L87 Difference]: Start difference. First operand 309 states and 473 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:51,685 INFO L93 Difference]: Finished difference Result 646 states and 991 transitions. [2022-07-19 11:04:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:51,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-19 11:04:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:51,688 INFO L225 Difference]: With dead ends: 646 [2022-07-19 11:04:51,688 INFO L226 Difference]: Without dead ends: 358 [2022-07-19 11:04:51,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:51,689 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:51,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 591 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:04:51,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-19 11:04:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 333. [2022-07-19 11:04:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.533132530120482) internal successors, (509), 332 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 509 transitions. [2022-07-19 11:04:51,696 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 509 transitions. Word has length 84 [2022-07-19 11:04:51,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:51,696 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 509 transitions. [2022-07-19 11:04:51,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 509 transitions. [2022-07-19 11:04:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 11:04:51,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:51,697 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 11:04:51,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 11:04:51,697 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash 742972446, now seen corresponding path program 1 times [2022-07-19 11:04:51,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:51,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720163121] [2022-07-19 11:04:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:51,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:51,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720163121] [2022-07-19 11:04:51,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720163121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:51,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:51,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113254249] [2022-07-19 11:04:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:51,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:51,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:51,791 INFO L87 Difference]: Start difference. First operand 333 states and 509 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:52,544 INFO L93 Difference]: Finished difference Result 771 states and 1187 transitions. [2022-07-19 11:04:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:52,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-07-19 11:04:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:52,546 INFO L225 Difference]: With dead ends: 771 [2022-07-19 11:04:52,546 INFO L226 Difference]: Without dead ends: 459 [2022-07-19 11:04:52,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:52,547 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 141 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:52,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 362 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:52,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-19 11:04:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 349. [2022-07-19 11:04:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.514367816091954) internal successors, (527), 348 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 527 transitions. [2022-07-19 11:04:52,582 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 527 transitions. Word has length 97 [2022-07-19 11:04:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:52,582 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 527 transitions. [2022-07-19 11:04:52,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 527 transitions. [2022-07-19 11:04:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 11:04:52,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:52,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:52,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:04:52,585 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:52,585 INFO L85 PathProgramCache]: Analyzing trace with hash 659456893, now seen corresponding path program 1 times [2022-07-19 11:04:52,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:52,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731570881] [2022-07-19 11:04:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731570881] [2022-07-19 11:04:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731570881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:52,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:52,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:52,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413548683] [2022-07-19 11:04:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:52,727 INFO L87 Difference]: Start difference. First operand 349 states and 527 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:53,328 INFO L93 Difference]: Finished difference Result 755 states and 1147 transitions. [2022-07-19 11:04:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:53,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-07-19 11:04:53,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:53,330 INFO L225 Difference]: With dead ends: 755 [2022-07-19 11:04:53,330 INFO L226 Difference]: Without dead ends: 427 [2022-07-19 11:04:53,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:53,332 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 139 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:53,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-19 11:04:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2022-07-19 11:04:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4971264367816093) internal successors, (521), 348 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 521 transitions. [2022-07-19 11:04:53,339 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 521 transitions. Word has length 98 [2022-07-19 11:04:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:53,340 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 521 transitions. [2022-07-19 11:04:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 521 transitions. [2022-07-19 11:04:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 11:04:53,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:53,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:53,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:04:53,341 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash 280390343, now seen corresponding path program 1 times [2022-07-19 11:04:53,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:53,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184492368] [2022-07-19 11:04:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:53,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:53,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184492368] [2022-07-19 11:04:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184492368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:53,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:53,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118200809] [2022-07-19 11:04:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:53,437 INFO L87 Difference]: Start difference. First operand 349 states and 521 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:54,022 INFO L93 Difference]: Finished difference Result 712 states and 1064 transitions. [2022-07-19 11:04:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:54,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-19 11:04:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:54,025 INFO L225 Difference]: With dead ends: 712 [2022-07-19 11:04:54,025 INFO L226 Difference]: Without dead ends: 384 [2022-07-19 11:04:54,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:54,026 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 71 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:54,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 489 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-19 11:04:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 349. [2022-07-19 11:04:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4942528735632183) internal successors, (520), 348 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 520 transitions. [2022-07-19 11:04:54,037 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 520 transitions. Word has length 104 [2022-07-19 11:04:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:54,038 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 520 transitions. [2022-07-19 11:04:54,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 520 transitions. [2022-07-19 11:04:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 11:04:54,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:54,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:04:54,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 509759261, now seen corresponding path program 1 times [2022-07-19 11:04:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629352559] [2022-07-19 11:04:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:54,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:54,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629352559] [2022-07-19 11:04:54,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629352559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:54,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:54,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56968101] [2022-07-19 11:04:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:54,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:54,136 INFO L87 Difference]: Start difference. First operand 349 states and 520 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:54,628 INFO L93 Difference]: Finished difference Result 710 states and 1059 transitions. [2022-07-19 11:04:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-19 11:04:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:54,631 INFO L225 Difference]: With dead ends: 710 [2022-07-19 11:04:54,632 INFO L226 Difference]: Without dead ends: 382 [2022-07-19 11:04:54,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:54,633 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 68 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:54,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 495 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-19 11:04:54,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 349. [2022-07-19 11:04:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4913793103448276) internal successors, (519), 348 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 519 transitions. [2022-07-19 11:04:54,640 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 519 transitions. Word has length 105 [2022-07-19 11:04:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:54,640 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 519 transitions. [2022-07-19 11:04:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 519 transitions. [2022-07-19 11:04:54,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 11:04:54,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:54,641 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:04:54,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:54,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -213108826, now seen corresponding path program 1 times [2022-07-19 11:04:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:54,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306734802] [2022-07-19 11:04:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:54,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306734802] [2022-07-19 11:04:54,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306734802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:54,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:54,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:54,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468612940] [2022-07-19 11:04:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:54,784 INFO L87 Difference]: Start difference. First operand 349 states and 519 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:56,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:56,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:56,381 INFO L93 Difference]: Finished difference Result 707 states and 1053 transitions. [2022-07-19 11:04:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:56,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-07-19 11:04:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:56,383 INFO L225 Difference]: With dead ends: 707 [2022-07-19 11:04:56,383 INFO L226 Difference]: Without dead ends: 379 [2022-07-19 11:04:56,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:56,384 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:56,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 501 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:04:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-19 11:04:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 349. [2022-07-19 11:04:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4885057471264367) internal successors, (518), 348 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 518 transitions. [2022-07-19 11:04:56,391 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 518 transitions. Word has length 105 [2022-07-19 11:04:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:56,392 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 518 transitions. [2022-07-19 11:04:56,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 518 transitions. [2022-07-19 11:04:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 11:04:56,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:56,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 11:04:56,394 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1295545029, now seen corresponding path program 1 times [2022-07-19 11:04:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:56,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550966704] [2022-07-19 11:04:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:56,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550966704] [2022-07-19 11:04:56,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550966704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:56,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:56,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:56,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369031824] [2022-07-19 11:04:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:56,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:56,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:56,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:56,490 INFO L87 Difference]: Start difference. First operand 349 states and 518 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,167 INFO L93 Difference]: Finished difference Result 755 states and 1129 transitions. [2022-07-19 11:04:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:57,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-19 11:04:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,170 INFO L225 Difference]: With dead ends: 755 [2022-07-19 11:04:57,170 INFO L226 Difference]: Without dead ends: 427 [2022-07-19 11:04:57,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:57,171 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 125 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 368 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-19 11:04:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2022-07-19 11:04:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4770114942528736) internal successors, (514), 348 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 514 transitions. [2022-07-19 11:04:57,178 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 514 transitions. Word has length 106 [2022-07-19 11:04:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,178 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 514 transitions. [2022-07-19 11:04:57,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 514 transitions. [2022-07-19 11:04:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 11:04:57,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:57,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 11:04:57,180 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 878148423, now seen corresponding path program 1 times [2022-07-19 11:04:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538739294] [2022-07-19 11:04:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 11:04:57,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:57,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538739294] [2022-07-19 11:04:57,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538739294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:57,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:57,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20556923] [2022-07-19 11:04:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:57,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:57,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,297 INFO L87 Difference]: Start difference. First operand 349 states and 514 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,335 INFO L93 Difference]: Finished difference Result 1000 states and 1488 transitions. [2022-07-19 11:04:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:57,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-19 11:04:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,342 INFO L225 Difference]: With dead ends: 1000 [2022-07-19 11:04:57,342 INFO L226 Difference]: Without dead ends: 672 [2022-07-19 11:04:57,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,344 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 136 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-19 11:04:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2022-07-19 11:04:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.473919523099851) internal successors, (989), 671 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 989 transitions. [2022-07-19 11:04:57,360 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 989 transitions. Word has length 106 [2022-07-19 11:04:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 989 transitions. [2022-07-19 11:04:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 989 transitions. [2022-07-19 11:04:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 11:04:57,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,363 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 11:04:57,363 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash -808031415, now seen corresponding path program 1 times [2022-07-19 11:04:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849528012] [2022-07-19 11:04:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 11:04:57,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:57,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849528012] [2022-07-19 11:04:57,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849528012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:57,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:57,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40093488] [2022-07-19 11:04:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:57,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,450 INFO L87 Difference]: Start difference. First operand 672 states and 989 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,479 INFO L93 Difference]: Finished difference Result 1350 states and 1990 transitions. [2022-07-19 11:04:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:57,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-19 11:04:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,481 INFO L225 Difference]: With dead ends: 1350 [2022-07-19 11:04:57,481 INFO L226 Difference]: Without dead ends: 699 [2022-07-19 11:04:57,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,483 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 410 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-19 11:04:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-07-19 11:04:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.4670487106017192) internal successors, (1024), 698 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1024 transitions. [2022-07-19 11:04:57,496 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1024 transitions. Word has length 106 [2022-07-19 11:04:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,496 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1024 transitions. [2022-07-19 11:04:57,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1024 transitions. [2022-07-19 11:04:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 11:04:57,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:57,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 11:04:57,498 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1068451403, now seen corresponding path program 1 times [2022-07-19 11:04:57,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642572509] [2022-07-19 11:04:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 11:04:57,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:57,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642572509] [2022-07-19 11:04:57,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642572509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:57,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:57,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:57,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463315409] [2022-07-19 11:04:57,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:57,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:57,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:57,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:57,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,585 INFO L87 Difference]: Start difference. First operand 699 states and 1024 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,607 INFO L93 Difference]: Finished difference Result 1379 states and 2026 transitions. [2022-07-19 11:04:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-19 11:04:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,610 INFO L225 Difference]: With dead ends: 1379 [2022-07-19 11:04:57,610 INFO L226 Difference]: Without dead ends: 701 [2022-07-19 11:04:57,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,611 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 389 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-07-19 11:04:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2022-07-19 11:04:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.4657142857142857) internal successors, (1026), 700 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1026 transitions. [2022-07-19 11:04:57,624 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1026 transitions. Word has length 106 [2022-07-19 11:04:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,624 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1026 transitions. [2022-07-19 11:04:57,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1026 transitions. [2022-07-19 11:04:57,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 11:04:57,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:57,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 11:04:57,626 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash -414944271, now seen corresponding path program 1 times [2022-07-19 11:04:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951845040] [2022-07-19 11:04:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:57,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:57,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951845040] [2022-07-19 11:04:57,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951845040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:57,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:57,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:57,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155644610] [2022-07-19 11:04:57,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:57,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:57,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,717 INFO L87 Difference]: Start difference. First operand 701 states and 1026 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,761 INFO L93 Difference]: Finished difference Result 1707 states and 2514 transitions. [2022-07-19 11:04:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:57,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-19 11:04:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,765 INFO L225 Difference]: With dead ends: 1707 [2022-07-19 11:04:57,765 INFO L226 Difference]: Without dead ends: 1029 [2022-07-19 11:04:57,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,767 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 569 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:57,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-07-19 11:04:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1027. [2022-07-19 11:04:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 1.4688109161793372) internal successors, (1507), 1026 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1507 transitions. [2022-07-19 11:04:57,786 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1507 transitions. Word has length 108 [2022-07-19 11:04:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,787 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1507 transitions. [2022-07-19 11:04:57,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1507 transitions. [2022-07-19 11:04:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 11:04:57,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,789 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:04:57,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 11:04:57,789 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2063160218, now seen corresponding path program 1 times [2022-07-19 11:04:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888962464] [2022-07-19 11:04:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:57,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888962464] [2022-07-19 11:04:57,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888962464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:57,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:57,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433632164] [2022-07-19 11:04:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:57,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,894 INFO L87 Difference]: Start difference. First operand 1027 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,942 INFO L93 Difference]: Finished difference Result 2353 states and 3470 transitions. [2022-07-19 11:04:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-19 11:04:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,946 INFO L225 Difference]: With dead ends: 2353 [2022-07-19 11:04:57,946 INFO L226 Difference]: Without dead ends: 1349 [2022-07-19 11:04:57,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:57,948 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 567 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-07-19 11:04:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1349. [2022-07-19 11:04:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.4688427299703264) internal successors, (1980), 1348 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1980 transitions. [2022-07-19 11:04:57,973 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1980 transitions. Word has length 125 [2022-07-19 11:04:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,973 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1980 transitions. [2022-07-19 11:04:57,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1980 transitions. [2022-07-19 11:04:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 11:04:57,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,975 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:04:57,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 11:04:57,976 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash 726227607, now seen corresponding path program 1 times [2022-07-19 11:04:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631187610] [2022-07-19 11:04:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 11:04:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631187610] [2022-07-19 11:04:58,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631187610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:58,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:58,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051150497] [2022-07-19 11:04:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:58,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:58,085 INFO L87 Difference]: Start difference. First operand 1349 states and 1980 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:58,130 INFO L93 Difference]: Finished difference Result 2005 states and 2944 transitions. [2022-07-19 11:04:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:58,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-07-19 11:04:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:58,135 INFO L225 Difference]: With dead ends: 2005 [2022-07-19 11:04:58,136 INFO L226 Difference]: Without dead ends: 1677 [2022-07-19 11:04:58,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:58,137 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:58,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 373 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-07-19 11:04:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1675. [2022-07-19 11:04:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.467741935483871) internal successors, (2457), 1674 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2457 transitions. [2022-07-19 11:04:58,187 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2457 transitions. Word has length 128 [2022-07-19 11:04:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:58,188 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2457 transitions. [2022-07-19 11:04:58,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2457 transitions. [2022-07-19 11:04:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 11:04:58,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:58,190 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:04:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 11:04:58,190 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1329906676, now seen corresponding path program 1 times [2022-07-19 11:04:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:58,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464479974] [2022-07-19 11:04:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 11:04:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464479974] [2022-07-19 11:04:58,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464479974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:58,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:58,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654440168] [2022-07-19 11:04:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:58,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:58,300 INFO L87 Difference]: Start difference. First operand 1675 states and 2457 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:58,348 INFO L93 Difference]: Finished difference Result 2005 states and 2940 transitions. [2022-07-19 11:04:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-07-19 11:04:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:58,355 INFO L225 Difference]: With dead ends: 2005 [2022-07-19 11:04:58,355 INFO L226 Difference]: Without dead ends: 2003 [2022-07-19 11:04:58,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:58,356 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 165 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:58,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 371 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-07-19 11:04:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2022-07-19 11:04:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.4685) internal successors, (2937), 2000 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2937 transitions. [2022-07-19 11:04:58,399 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2937 transitions. Word has length 129 [2022-07-19 11:04:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:58,399 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2937 transitions. [2022-07-19 11:04:58,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2937 transitions. [2022-07-19 11:04:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 11:04:58,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:58,403 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:04:58,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 11:04:58,403 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash -657412248, now seen corresponding path program 1 times [2022-07-19 11:04:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:58,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067899615] [2022-07-19 11:04:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:58,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 11:04:58,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067899615] [2022-07-19 11:04:58,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067899615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:58,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:58,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426578661] [2022-07-19 11:04:58,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:58,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:58,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:58,525 INFO L87 Difference]: Start difference. First operand 2001 states and 2937 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:58,587 INFO L93 Difference]: Finished difference Result 4299 states and 6325 transitions. [2022-07-19 11:04:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2022-07-19 11:04:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:58,595 INFO L225 Difference]: With dead ends: 4299 [2022-07-19 11:04:58,595 INFO L226 Difference]: Without dead ends: 2321 [2022-07-19 11:04:58,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:58,598 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:58,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 569 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2022-07-19 11:04:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2321. [2022-07-19 11:04:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2320 states have (on average 1.4689655172413794) internal successors, (3408), 2320 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3408 transitions. [2022-07-19 11:04:58,649 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3408 transitions. Word has length 167 [2022-07-19 11:04:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:58,649 INFO L495 AbstractCegarLoop]: Abstraction has 2321 states and 3408 transitions. [2022-07-19 11:04:58,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3408 transitions. [2022-07-19 11:04:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-19 11:04:58,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:58,654 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:04:58,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 11:04:58,654 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2055097211, now seen corresponding path program 1 times [2022-07-19 11:04:58,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:58,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296956594] [2022-07-19 11:04:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:58,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-19 11:04:58,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:58,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296956594] [2022-07-19 11:04:58,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296956594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:58,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:58,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:58,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670623737] [2022-07-19 11:04:58,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:58,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:58,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:58,782 INFO L87 Difference]: Start difference. First operand 2321 states and 3408 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:59,275 INFO L93 Difference]: Finished difference Result 4773 states and 7002 transitions. [2022-07-19 11:04:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2022-07-19 11:04:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:59,284 INFO L225 Difference]: With dead ends: 4773 [2022-07-19 11:04:59,284 INFO L226 Difference]: Without dead ends: 2475 [2022-07-19 11:04:59,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:59,287 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 40 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:59,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 562 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:04:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2022-07-19 11:04:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2321. [2022-07-19 11:04:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2320 states have (on average 1.465948275862069) internal successors, (3401), 2320 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3401 transitions. [2022-07-19 11:04:59,338 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3401 transitions. Word has length 199 [2022-07-19 11:04:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:59,339 INFO L495 AbstractCegarLoop]: Abstraction has 2321 states and 3401 transitions. [2022-07-19 11:04:59,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3401 transitions. [2022-07-19 11:04:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-19 11:04:59,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:59,344 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 11:04:59,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 11:04:59,344 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash -453125189, now seen corresponding path program 1 times [2022-07-19 11:04:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176164671] [2022-07-19 11:04:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:04:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176164671] [2022-07-19 11:04:59,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176164671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:59,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:59,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505524218] [2022-07-19 11:04:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:59,487 INFO L87 Difference]: Start difference. First operand 2321 states and 3401 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:59,991 INFO L93 Difference]: Finished difference Result 5143 states and 7520 transitions. [2022-07-19 11:04:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:59,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-07-19 11:04:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:00,001 INFO L225 Difference]: With dead ends: 5143 [2022-07-19 11:05:00,002 INFO L226 Difference]: Without dead ends: 2845 [2022-07-19 11:05:00,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:00,006 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 57 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:00,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 625 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2022-07-19 11:05:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2545. [2022-07-19 11:05:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.4689465408805031) internal successors, (3737), 2544 states have internal predecessors, (3737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3737 transitions. [2022-07-19 11:05:00,108 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3737 transitions. Word has length 207 [2022-07-19 11:05:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:00,109 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3737 transitions. [2022-07-19 11:05:00,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3737 transitions. [2022-07-19 11:05:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-19 11:05:00,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:00,116 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 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] [2022-07-19 11:05:00,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 11:05:00,116 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1368023277, now seen corresponding path program 1 times [2022-07-19 11:05:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:00,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203871970] [2022-07-19 11:05:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:00,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 11:05:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:00,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203871970] [2022-07-19 11:05:00,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203871970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:00,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:00,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360540376] [2022-07-19 11:05:00,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:00,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:00,276 INFO L87 Difference]: Start difference. First operand 2545 states and 3737 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:00,835 INFO L93 Difference]: Finished difference Result 5596 states and 8211 transitions. [2022-07-19 11:05:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-07-19 11:05:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:00,846 INFO L225 Difference]: With dead ends: 5596 [2022-07-19 11:05:00,846 INFO L226 Difference]: Without dead ends: 3074 [2022-07-19 11:05:00,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:00,849 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 124 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:00,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 354 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-07-19 11:05:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2545. [2022-07-19 11:05:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.455188679245283) internal successors, (3702), 2544 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3702 transitions. [2022-07-19 11:05:00,926 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3702 transitions. Word has length 222 [2022-07-19 11:05:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:00,926 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3702 transitions. [2022-07-19 11:05:00,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3702 transitions. [2022-07-19 11:05:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-19 11:05:00,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:00,932 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 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] [2022-07-19 11:05:00,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 11:05:00,932 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:00,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1373277428, now seen corresponding path program 1 times [2022-07-19 11:05:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:00,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818080361] [2022-07-19 11:05:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-19 11:05:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:01,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818080361] [2022-07-19 11:05:01,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818080361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:01,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:01,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521929986] [2022-07-19 11:05:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:01,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:01,090 INFO L87 Difference]: Start difference. First operand 2545 states and 3702 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:02,068 INFO L93 Difference]: Finished difference Result 5596 states and 8141 transitions. [2022-07-19 11:05:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:02,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2022-07-19 11:05:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:02,086 INFO L225 Difference]: With dead ends: 5596 [2022-07-19 11:05:02,090 INFO L226 Difference]: Without dead ends: 3074 [2022-07-19 11:05:02,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:02,093 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 108 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:02,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 360 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:05:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-07-19 11:05:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2342. [2022-07-19 11:05:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2341 states have (on average 1.4617684750106792) internal successors, (3422), 2341 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3422 transitions. [2022-07-19 11:05:02,155 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3422 transitions. Word has length 224 [2022-07-19 11:05:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:02,155 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 3422 transitions. [2022-07-19 11:05:02,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3422 transitions. [2022-07-19 11:05:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-19 11:05:02,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:02,161 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 11:05:02,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 11:05:02,161 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1454909228, now seen corresponding path program 1 times [2022-07-19 11:05:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:02,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374407998] [2022-07-19 11:05:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374407998] [2022-07-19 11:05:02,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374407998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:02,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:02,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587127768] [2022-07-19 11:05:02,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:02,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:02,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:02,318 INFO L87 Difference]: Start difference. First operand 2342 states and 3422 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:03,140 INFO L93 Difference]: Finished difference Result 5130 states and 7478 transitions. [2022-07-19 11:05:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-07-19 11:05:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:03,146 INFO L225 Difference]: With dead ends: 5130 [2022-07-19 11:05:03,146 INFO L226 Difference]: Without dead ends: 2811 [2022-07-19 11:05:03,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:03,148 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 56 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:03,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 609 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:05:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-07-19 11:05:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2531. [2022-07-19 11:05:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2530 states have (on average 1.4604743083003953) internal successors, (3695), 2530 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3695 transitions. [2022-07-19 11:05:03,198 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3695 transitions. Word has length 235 [2022-07-19 11:05:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:03,199 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 3695 transitions. [2022-07-19 11:05:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3695 transitions. [2022-07-19 11:05:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 11:05:03,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:03,205 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-19 11:05:03,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 11:05:03,205 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1069561667, now seen corresponding path program 1 times [2022-07-19 11:05:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:03,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313150460] [2022-07-19 11:05:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:03,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:03,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313150460] [2022-07-19 11:05:03,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313150460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:03,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:03,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:03,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826226564] [2022-07-19 11:05:03,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:03,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:03,368 INFO L87 Difference]: Start difference. First operand 2531 states and 3695 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:04,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:05,023 INFO L93 Difference]: Finished difference Result 5319 states and 7744 transitions. [2022-07-19 11:05:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2022-07-19 11:05:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:05,027 INFO L225 Difference]: With dead ends: 5319 [2022-07-19 11:05:05,028 INFO L226 Difference]: Without dead ends: 2811 [2022-07-19 11:05:05,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:05,030 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 50 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:05,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 607 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:05:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-07-19 11:05:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2601. [2022-07-19 11:05:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2600 states have (on average 1.4642307692307692) internal successors, (3807), 2600 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3807 transitions. [2022-07-19 11:05:05,092 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3807 transitions. Word has length 240 [2022-07-19 11:05:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:05,093 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 3807 transitions. [2022-07-19 11:05:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3807 transitions. [2022-07-19 11:05:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 11:05:05,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:05,099 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2022-07-19 11:05:05,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 11:05:05,099 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1956784513, now seen corresponding path program 1 times [2022-07-19 11:05:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:05,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115189096] [2022-07-19 11:05:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:05,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 284 proven. 96 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-19 11:05:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:05,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115189096] [2022-07-19 11:05:05,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115189096] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:05,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791956182] [2022-07-19 11:05:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:05,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:05,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:05,277 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) [2022-07-19 11:05:05,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:05:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:06,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 11:05:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:06,208 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:06,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:06,308 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:06,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:06,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 11:05:06,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:06,377 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:06,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:06,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 282 proven. 73 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-19 11:05:06,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:06,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791956182] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:06,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:06,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-19 11:05:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834269598] [2022-07-19 11:05:06,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:06,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:06,485 INFO L87 Difference]: Start difference. First operand 2601 states and 3807 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:07,631 INFO L93 Difference]: Finished difference Result 5911 states and 8624 transitions. [2022-07-19 11:05:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:07,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2022-07-19 11:05:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:07,637 INFO L225 Difference]: With dead ends: 5911 [2022-07-19 11:05:07,637 INFO L226 Difference]: Without dead ends: 3333 [2022-07-19 11:05:07,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:07,640 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 110 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:07,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 356 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:05:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2022-07-19 11:05:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2790. [2022-07-19 11:05:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 1.462889924704195) internal successors, (4080), 2789 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4080 transitions. [2022-07-19 11:05:07,708 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4080 transitions. Word has length 240 [2022-07-19 11:05:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:07,708 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 4080 transitions. [2022-07-19 11:05:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4080 transitions. [2022-07-19 11:05:07,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-19 11:05:07,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:07,713 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-07-19 11:05:07,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 11:05:07,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-19 11:05:07,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1346794502, now seen corresponding path program 1 times [2022-07-19 11:05:07,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:07,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731093867] [2022-07-19 11:05:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:08,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731093867] [2022-07-19 11:05:08,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731093867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:08,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:08,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037596665] [2022-07-19 11:05:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:08,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:08,108 INFO L87 Difference]: Start difference. First operand 2790 states and 4080 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:09,250 INFO L93 Difference]: Finished difference Result 5823 states and 8493 transitions. [2022-07-19 11:05:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:09,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-07-19 11:05:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:09,256 INFO L225 Difference]: With dead ends: 5823 [2022-07-19 11:05:09,256 INFO L226 Difference]: Without dead ends: 3056 [2022-07-19 11:05:09,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:09,259 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 47 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:09,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 603 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:05:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-07-19 11:05:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2867. [2022-07-19 11:05:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2866 states have (on average 1.4651081646894626) internal successors, (4199), 2866 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 4199 transitions. [2022-07-19 11:05:09,320 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 4199 transitions. Word has length 241 [2022-07-19 11:05:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:09,320 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 4199 transitions. [2022-07-19 11:05:09,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 4199 transitions. [2022-07-19 11:05:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-19 11:05:09,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:09,326 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-07-19 11:05:09,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 11:05:09,326 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1214068344, now seen corresponding path program 1 times [2022-07-19 11:05:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457117997] [2022-07-19 11:05:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:09,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 287 proven. 99 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 11:05:09,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:09,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457117997] [2022-07-19 11:05:09,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457117997] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:09,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176821141] [2022-07-19 11:05:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:09,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:09,515 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) [2022-07-19 11:05:09,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 11:05:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:10,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 11:05:10,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:10,315 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:10,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:10,346 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:10,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:10,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 11:05:10,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:10,388 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:10,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:10,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 286 proven. 71 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-19 11:05:10,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:10,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176821141] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:10,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:10,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-19 11:05:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277704470] [2022-07-19 11:05:10,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:10,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:10,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:10,488 INFO L87 Difference]: Start difference. First operand 2867 states and 4199 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:11,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:11,921 INFO L93 Difference]: Finished difference Result 6163 states and 8981 transitions. [2022-07-19 11:05:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-07-19 11:05:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:11,927 INFO L225 Difference]: With dead ends: 6163 [2022-07-19 11:05:11,927 INFO L226 Difference]: Without dead ends: 3319 [2022-07-19 11:05:11,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:11,930 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 109 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:11,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:05:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2022-07-19 11:05:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2790. [2022-07-19 11:05:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 1.4578702043743277) internal successors, (4066), 2789 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4066 transitions. [2022-07-19 11:05:12,022 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4066 transitions. Word has length 241 [2022-07-19 11:05:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:12,023 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 4066 transitions. [2022-07-19 11:05:12,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4066 transitions. [2022-07-19 11:05:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-19 11:05:12,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:12,029 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 11:05:12,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 11:05:12,243 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,SelfDestructingSolverStorable40 [2022-07-19 11:05:12,244 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash -588978041, now seen corresponding path program 1 times [2022-07-19 11:05:12,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:12,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960146795] [2022-07-19 11:05:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:12,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:12,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960146795] [2022-07-19 11:05:12,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960146795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:12,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:12,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209016021] [2022-07-19 11:05:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:12,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:12,388 INFO L87 Difference]: Start difference. First operand 2790 states and 4066 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:12,996 INFO L93 Difference]: Finished difference Result 5823 states and 8458 transitions. [2022-07-19 11:05:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-07-19 11:05:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:13,006 INFO L225 Difference]: With dead ends: 5823 [2022-07-19 11:05:13,006 INFO L226 Difference]: Without dead ends: 3056 [2022-07-19 11:05:13,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:13,011 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 41 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:13,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 601 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-07-19 11:05:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2902. [2022-07-19 11:05:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2901 states have (on average 1.4594967252671494) internal successors, (4234), 2901 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4234 transitions. [2022-07-19 11:05:13,073 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4234 transitions. Word has length 249 [2022-07-19 11:05:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:13,073 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 4234 transitions. [2022-07-19 11:05:13,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4234 transitions. [2022-07-19 11:05:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-19 11:05:13,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:13,081 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 11:05:13,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 11:05:13,081 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 735878153, now seen corresponding path program 1 times [2022-07-19 11:05:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:13,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901235698] [2022-07-19 11:05:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:13,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 305 proven. 3 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-19 11:05:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901235698] [2022-07-19 11:05:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901235698] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639013120] [2022-07-19 11:05:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:13,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:13,261 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) [2022-07-19 11:05:13,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 11:05:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:14,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 11:05:14,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:14,069 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:14,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:14,104 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:14,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:14,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:14,159 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:14,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:14,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 302 proven. 64 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-19 11:05:14,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:14,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639013120] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:14,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:14,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2022-07-19 11:05:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002940795] [2022-07-19 11:05:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:14,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:14,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 11:05:14,298 INFO L87 Difference]: Start difference. First operand 2902 states and 4234 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:14,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:14,985 INFO L93 Difference]: Finished difference Result 6473 states and 9405 transitions. [2022-07-19 11:05:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:14,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-07-19 11:05:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:14,991 INFO L225 Difference]: With dead ends: 6473 [2022-07-19 11:05:14,991 INFO L226 Difference]: Without dead ends: 3594 [2022-07-19 11:05:14,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-19 11:05:14,995 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 102 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:14,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 359 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-07-19 11:05:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3051. [2022-07-19 11:05:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3050 states have (on average 1.460655737704918) internal successors, (4455), 3050 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4455 transitions. [2022-07-19 11:05:15,088 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4455 transitions. Word has length 249 [2022-07-19 11:05:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:15,090 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4455 transitions. [2022-07-19 11:05:15,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4455 transitions. [2022-07-19 11:05:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-19 11:05:15,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:15,095 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 11:05:15,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 11:05:15,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:15,312 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:15,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash 716366148, now seen corresponding path program 1 times [2022-07-19 11:05:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:15,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89462116] [2022-07-19 11:05:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:15,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89462116] [2022-07-19 11:05:15,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89462116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:15,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:15,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728046144] [2022-07-19 11:05:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:15,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:15,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:15,480 INFO L87 Difference]: Start difference. First operand 3051 states and 4455 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:15,992 INFO L93 Difference]: Finished difference Result 6325 states and 9208 transitions. [2022-07-19 11:05:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2022-07-19 11:05:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:15,998 INFO L225 Difference]: With dead ends: 6325 [2022-07-19 11:05:15,998 INFO L226 Difference]: Without dead ends: 3283 [2022-07-19 11:05:16,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:16,001 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 37 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:16,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 594 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2022-07-19 11:05:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3156. [2022-07-19 11:05:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3156 states, 3155 states have (on average 1.4608557844690966) internal successors, (4609), 3155 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 4609 transitions. [2022-07-19 11:05:16,074 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 4609 transitions. Word has length 250 [2022-07-19 11:05:16,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:16,075 INFO L495 AbstractCegarLoop]: Abstraction has 3156 states and 4609 transitions. [2022-07-19 11:05:16,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 4609 transitions. [2022-07-19 11:05:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-19 11:05:16,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:16,080 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 11:05:16,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 11:05:16,080 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1162764798, now seen corresponding path program 1 times [2022-07-19 11:05:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:16,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354177377] [2022-07-19 11:05:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:05:16,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:16,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354177377] [2022-07-19 11:05:16,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354177377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:16,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:16,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:16,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088526036] [2022-07-19 11:05:16,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:16,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:16,248 INFO L87 Difference]: Start difference. First operand 3156 states and 4609 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:17,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:17,059 INFO L93 Difference]: Finished difference Result 6465 states and 9418 transitions. [2022-07-19 11:05:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:17,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2022-07-19 11:05:17,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:17,063 INFO L225 Difference]: With dead ends: 6465 [2022-07-19 11:05:17,063 INFO L226 Difference]: Without dead ends: 3332 [2022-07-19 11:05:17,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:17,066 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 32 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:17,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 511 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:05:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-07-19 11:05:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3219. [2022-07-19 11:05:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3218 states have (on average 1.4605344934742075) internal successors, (4700), 3218 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4700 transitions. [2022-07-19 11:05:17,138 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4700 transitions. Word has length 250 [2022-07-19 11:05:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:17,138 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 4700 transitions. [2022-07-19 11:05:17,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4700 transitions. [2022-07-19 11:05:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-07-19 11:05:17,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:17,143 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 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] [2022-07-19 11:05:17,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 11:05:17,144 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1130533427, now seen corresponding path program 1 times [2022-07-19 11:05:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:17,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007005537] [2022-07-19 11:05:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-19 11:05:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:17,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007005537] [2022-07-19 11:05:17,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007005537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:17,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:17,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:17,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831646627] [2022-07-19 11:05:17,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:17,325 INFO L87 Difference]: Start difference. First operand 3219 states and 4700 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:17,836 INFO L93 Difference]: Finished difference Result 7378 states and 10751 transitions. [2022-07-19 11:05:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2022-07-19 11:05:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:17,849 INFO L225 Difference]: With dead ends: 7378 [2022-07-19 11:05:17,849 INFO L226 Difference]: Without dead ends: 4182 [2022-07-19 11:05:17,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:17,852 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 113 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:17,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 388 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2022-07-19 11:05:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3635. [2022-07-19 11:05:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.454045129334067) internal successors, (5284), 3634 states have internal predecessors, (5284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5284 transitions. [2022-07-19 11:05:17,937 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5284 transitions. Word has length 252 [2022-07-19 11:05:17,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:17,937 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5284 transitions. [2022-07-19 11:05:17,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5284 transitions. [2022-07-19 11:05:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-19 11:05:17,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:17,943 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:17,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 11:05:17,943 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1273550838, now seen corresponding path program 1 times [2022-07-19 11:05:17,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:17,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381327839] [2022-07-19 11:05:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-19 11:05:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381327839] [2022-07-19 11:05:18,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381327839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:18,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:18,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173337581] [2022-07-19 11:05:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:18,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:18,102 INFO L87 Difference]: Start difference. First operand 3635 states and 5284 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:18,645 INFO L93 Difference]: Finished difference Result 7374 states and 10691 transitions. [2022-07-19 11:05:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2022-07-19 11:05:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:18,649 INFO L225 Difference]: With dead ends: 7374 [2022-07-19 11:05:18,649 INFO L226 Difference]: Without dead ends: 3762 [2022-07-19 11:05:18,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:18,652 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 51 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:18,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 591 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:18,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-07-19 11:05:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3635. [2022-07-19 11:05:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.4521188772702256) internal successors, (5277), 3634 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5277 transitions. [2022-07-19 11:05:18,729 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5277 transitions. Word has length 258 [2022-07-19 11:05:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:18,731 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5277 transitions. [2022-07-19 11:05:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5277 transitions. [2022-07-19 11:05:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-19 11:05:18,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:18,737 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 11:05:18,737 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -417777094, now seen corresponding path program 1 times [2022-07-19 11:05:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142151650] [2022-07-19 11:05:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-19 11:05:18,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:18,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142151650] [2022-07-19 11:05:18,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142151650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:18,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:18,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948099509] [2022-07-19 11:05:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:18,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:18,889 INFO L87 Difference]: Start difference. First operand 3635 states and 5277 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:19,314 INFO L93 Difference]: Finished difference Result 7360 states and 10656 transitions. [2022-07-19 11:05:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:19,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-07-19 11:05:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:19,318 INFO L225 Difference]: With dead ends: 7360 [2022-07-19 11:05:19,319 INFO L226 Difference]: Without dead ends: 3748 [2022-07-19 11:05:19,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:19,322 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 48 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:19,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 589 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-07-19 11:05:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3635. [2022-07-19 11:05:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.4501926252063841) internal successors, (5270), 3634 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5270 transitions. [2022-07-19 11:05:19,404 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5270 transitions. Word has length 259 [2022-07-19 11:05:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:19,404 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5270 transitions. [2022-07-19 11:05:19,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5270 transitions. [2022-07-19 11:05:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-19 11:05:19,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:19,411 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 11:05:19,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 11:05:19,411 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1996363610, now seen corresponding path program 1 times [2022-07-19 11:05:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:19,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559805434] [2022-07-19 11:05:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:19,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:05:19,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:19,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559805434] [2022-07-19 11:05:19,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559805434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:19,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:19,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146581987] [2022-07-19 11:05:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:19,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:19,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:19,566 INFO L87 Difference]: Start difference. First operand 3635 states and 5270 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:20,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:20,174 INFO L93 Difference]: Finished difference Result 7360 states and 10642 transitions. [2022-07-19 11:05:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-07-19 11:05:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:20,177 INFO L225 Difference]: With dead ends: 7360 [2022-07-19 11:05:20,177 INFO L226 Difference]: Without dead ends: 3748 [2022-07-19 11:05:20,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:20,180 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 44 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:20,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 587 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-07-19 11:05:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3635. [2022-07-19 11:05:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.4482663731425427) internal successors, (5263), 3634 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5263 transitions. [2022-07-19 11:05:20,239 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5263 transitions. Word has length 262 [2022-07-19 11:05:20,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:20,239 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5263 transitions. [2022-07-19 11:05:20,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5263 transitions. [2022-07-19 11:05:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-19 11:05:20,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:20,245 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 11:05:20,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 11:05:20,246 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:20,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash 939632408, now seen corresponding path program 1 times [2022-07-19 11:05:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:20,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114317254] [2022-07-19 11:05:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 397 proven. 75 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-19 11:05:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:20,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114317254] [2022-07-19 11:05:20,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114317254] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:20,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302195408] [2022-07-19 11:05:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:20,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:20,404 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) [2022-07-19 11:05:20,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 11:05:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:21,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 11:05:21,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:21,310 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:21,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:21,340 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:21,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:21,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 11:05:21,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:21,401 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:21,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:21,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 388 proven. 87 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-19 11:05:21,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:05:21,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302195408] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:21,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:21,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-19 11:05:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054889518] [2022-07-19 11:05:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:21,488 INFO L87 Difference]: Start difference. First operand 3635 states and 5263 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:22,049 INFO L93 Difference]: Finished difference Result 7997 states and 11544 transitions. [2022-07-19 11:05:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-07-19 11:05:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:22,054 INFO L225 Difference]: With dead ends: 7997 [2022-07-19 11:05:22,054 INFO L226 Difference]: Without dead ends: 4385 [2022-07-19 11:05:22,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:22,058 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 116 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:22,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 376 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2022-07-19 11:05:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 3845. [2022-07-19 11:05:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4352237252861602) internal successors, (5517), 3844 states have internal predecessors, (5517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5517 transitions. [2022-07-19 11:05:22,124 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5517 transitions. Word has length 262 [2022-07-19 11:05:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:22,124 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5517 transitions. [2022-07-19 11:05:22,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5517 transitions. [2022-07-19 11:05:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-19 11:05:22,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:22,130 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 11:05:22,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 11:05:22,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-07-19 11:05:22,343 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 30687352, now seen corresponding path program 1 times [2022-07-19 11:05:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:22,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701562749] [2022-07-19 11:05:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:05:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:22,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701562749] [2022-07-19 11:05:22,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701562749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:22,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:22,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270470376] [2022-07-19 11:05:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:22,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:22,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:22,488 INFO L87 Difference]: Start difference. First operand 3845 states and 5517 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:23,256 INFO L93 Difference]: Finished difference Result 7766 states and 11122 transitions. [2022-07-19 11:05:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:23,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2022-07-19 11:05:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:23,261 INFO L225 Difference]: With dead ends: 7766 [2022-07-19 11:05:23,261 INFO L226 Difference]: Without dead ends: 3944 [2022-07-19 11:05:23,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:23,264 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 41 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:23,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 583 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:05:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-19 11:05:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3845. [2022-07-19 11:05:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4334027055150884) internal successors, (5510), 3844 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5510 transitions. [2022-07-19 11:05:23,332 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5510 transitions. Word has length 263 [2022-07-19 11:05:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:23,332 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5510 transitions. [2022-07-19 11:05:23,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5510 transitions. [2022-07-19 11:05:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-19 11:05:23,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:23,337 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 11:05:23,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 11:05:23,337 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1631758458, now seen corresponding path program 1 times [2022-07-19 11:05:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:23,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390852127] [2022-07-19 11:05:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:23,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 401 proven. 78 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-19 11:05:23,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:23,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390852127] [2022-07-19 11:05:23,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390852127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:23,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629716939] [2022-07-19 11:05:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:23,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:23,483 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) [2022-07-19 11:05:23,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 11:05:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:24,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 11:05:24,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:24,453 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:24,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:24,479 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:24,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:24,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 11:05:24,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:24,534 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:24,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:24,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 393 proven. 85 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-19 11:05:24,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-19 11:05:24,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629716939] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:24,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:24,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-19 11:05:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610228878] [2022-07-19 11:05:24,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:24,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:24,625 INFO L87 Difference]: Start difference. First operand 3845 states and 5510 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:25,305 INFO L93 Difference]: Finished difference Result 8116 states and 11597 transitions. [2022-07-19 11:05:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:25,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2022-07-19 11:05:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:25,311 INFO L225 Difference]: With dead ends: 8116 [2022-07-19 11:05:25,311 INFO L226 Difference]: Without dead ends: 4294 [2022-07-19 11:05:25,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:25,315 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 115 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:25,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2022-07-19 11:05:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 3845. [2022-07-19 11:05:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4211758584807492) internal successors, (5463), 3844 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5463 transitions. [2022-07-19 11:05:25,388 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5463 transitions. Word has length 263 [2022-07-19 11:05:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:25,388 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5463 transitions. [2022-07-19 11:05:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5463 transitions. [2022-07-19 11:05:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-19 11:05:25,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:25,393 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:25,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 11:05:25,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:25,607 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 241138473, now seen corresponding path program 1 times [2022-07-19 11:05:25,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:25,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795793895] [2022-07-19 11:05:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 11:05:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:25,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795793895] [2022-07-19 11:05:25,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795793895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:25,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:25,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527812809] [2022-07-19 11:05:25,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:25,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:25,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:25,744 INFO L87 Difference]: Start difference. First operand 3845 states and 5463 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:26,198 INFO L93 Difference]: Finished difference Result 7766 states and 11014 transitions. [2022-07-19 11:05:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2022-07-19 11:05:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:26,201 INFO L225 Difference]: With dead ends: 7766 [2022-07-19 11:05:26,201 INFO L226 Difference]: Without dead ends: 3944 [2022-07-19 11:05:26,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:26,203 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 36 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:26,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 581 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-19 11:05:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3845. [2022-07-19 11:05:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4193548387096775) internal successors, (5456), 3844 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5456 transitions. [2022-07-19 11:05:26,264 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5456 transitions. Word has length 272 [2022-07-19 11:05:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:26,265 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5456 transitions. [2022-07-19 11:05:26,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5456 transitions. [2022-07-19 11:05:26,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-19 11:05:26,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:26,269 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:26,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 11:05:26,270 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:26,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash -382143129, now seen corresponding path program 1 times [2022-07-19 11:05:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:26,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529896784] [2022-07-19 11:05:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 433 proven. 13 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-19 11:05:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529896784] [2022-07-19 11:05:26,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529896784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168100695] [2022-07-19 11:05:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:26,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:26,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:26,424 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) [2022-07-19 11:05:26,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 11:05:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:27,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 11:05:27,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:27,404 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:27,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:27,428 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:27,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:27,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 11:05:27,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:27,465 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:27,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:27,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 428 proven. 77 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-19 11:05:27,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 11:05:27,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168100695] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:27,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:27,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-19 11:05:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376419517] [2022-07-19 11:05:27,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:27,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:27,564 INFO L87 Difference]: Start difference. First operand 3845 states and 5456 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:28,133 INFO L93 Difference]: Finished difference Result 8417 states and 11916 transitions. [2022-07-19 11:05:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2022-07-19 11:05:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:28,137 INFO L225 Difference]: With dead ends: 8417 [2022-07-19 11:05:28,137 INFO L226 Difference]: Without dead ends: 4595 [2022-07-19 11:05:28,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:28,139 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 110 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:28,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 356 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2022-07-19 11:05:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4090. [2022-07-19 11:05:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.4115920763022745) internal successors, (5772), 4089 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5772 transitions. [2022-07-19 11:05:28,224 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5772 transitions. Word has length 272 [2022-07-19 11:05:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:28,224 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5772 transitions. [2022-07-19 11:05:28,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5772 transitions. [2022-07-19 11:05:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-19 11:05:28,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:28,228 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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] [2022-07-19 11:05:28,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 11:05:28,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:28,429 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1965454516, now seen corresponding path program 1 times [2022-07-19 11:05:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:28,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282004648] [2022-07-19 11:05:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:28,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 11:05:28,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:28,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282004648] [2022-07-19 11:05:28,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282004648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:28,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:28,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947260742] [2022-07-19 11:05:28,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:28,587 INFO L87 Difference]: Start difference. First operand 4090 states and 5772 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:29,193 INFO L93 Difference]: Finished difference Result 8242 states and 11618 transitions. [2022-07-19 11:05:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:29,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-07-19 11:05:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:29,197 INFO L225 Difference]: With dead ends: 8242 [2022-07-19 11:05:29,197 INFO L226 Difference]: Without dead ends: 4175 [2022-07-19 11:05:29,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:29,199 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 33 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:29,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 577 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2022-07-19 11:05:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4090. [2022-07-19 11:05:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.4098801662998288) internal successors, (5765), 4089 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5765 transitions. [2022-07-19 11:05:29,292 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5765 transitions. Word has length 273 [2022-07-19 11:05:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:29,292 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5765 transitions. [2022-07-19 11:05:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5765 transitions. [2022-07-19 11:05:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-19 11:05:29,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:29,296 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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] [2022-07-19 11:05:29,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 11:05:29,296 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 187652302, now seen corresponding path program 1 times [2022-07-19 11:05:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:29,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516037141] [2022-07-19 11:05:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 438 proven. 11 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-19 11:05:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516037141] [2022-07-19 11:05:29,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516037141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060038474] [2022-07-19 11:05:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:29,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:05:29,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 11:05:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:30,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 11:05:30,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:30,465 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:30,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:30,493 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:30,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:30,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 11:05:30,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:30,527 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:30,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:30,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 433 proven. 75 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-19 11:05:30,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 11:05:30,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060038474] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:30,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:30,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-19 11:05:30,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743079245] [2022-07-19 11:05:30,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:30,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:30,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:30,618 INFO L87 Difference]: Start difference. First operand 4090 states and 5765 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:31,364 INFO L93 Difference]: Finished difference Result 8606 states and 12107 transitions. [2022-07-19 11:05:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:31,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-07-19 11:05:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:31,368 INFO L225 Difference]: With dead ends: 8606 [2022-07-19 11:05:31,368 INFO L226 Difference]: Without dead ends: 4539 [2022-07-19 11:05:31,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:31,370 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 109 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:31,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2022-07-19 11:05:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4090. [2022-07-19 11:05:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.401565174859379) internal successors, (5731), 4089 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5731 transitions. [2022-07-19 11:05:31,485 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5731 transitions. Word has length 273 [2022-07-19 11:05:31,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:31,485 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5731 transitions. [2022-07-19 11:05:31,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5731 transitions. [2022-07-19 11:05:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-19 11:05:31,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:31,488 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 11:05:31,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 11:05:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:31,689 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1120925968, now seen corresponding path program 1 times [2022-07-19 11:05:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:31,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458699916] [2022-07-19 11:05:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:31,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-07-19 11:05:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:31,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458699916] [2022-07-19 11:05:31,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458699916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:31,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:31,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335103320] [2022-07-19 11:05:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:31,833 INFO L87 Difference]: Start difference. First operand 4090 states and 5731 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:32,668 INFO L93 Difference]: Finished difference Result 8326 states and 11661 transitions. [2022-07-19 11:05:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2022-07-19 11:05:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:32,674 INFO L225 Difference]: With dead ends: 8326 [2022-07-19 11:05:32,674 INFO L226 Difference]: Without dead ends: 4259 [2022-07-19 11:05:32,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:32,677 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 14 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:32,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 553 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:05:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2022-07-19 11:05:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4237. [2022-07-19 11:05:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4236 states have (on average 1.3991973559962227) internal successors, (5927), 4236 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 5927 transitions. [2022-07-19 11:05:32,749 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 5927 transitions. Word has length 281 [2022-07-19 11:05:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:32,749 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 5927 transitions. [2022-07-19 11:05:32,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 5927 transitions. [2022-07-19 11:05:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-19 11:05:32,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:32,753 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 11:05:32,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-19 11:05:32,753 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1719417322, now seen corresponding path program 1 times [2022-07-19 11:05:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:32,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854062840] [2022-07-19 11:05:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-19 11:05:32,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:32,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854062840] [2022-07-19 11:05:32,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854062840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:32,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:32,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:32,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907724337] [2022-07-19 11:05:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:32,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:32,905 INFO L87 Difference]: Start difference. First operand 4237 states and 5927 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:34,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:34,484 INFO L93 Difference]: Finished difference Result 8557 states and 11956 transitions. [2022-07-19 11:05:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:34,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2022-07-19 11:05:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:34,488 INFO L225 Difference]: With dead ends: 8557 [2022-07-19 11:05:34,488 INFO L226 Difference]: Without dead ends: 4343 [2022-07-19 11:05:34,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:34,490 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 30 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:34,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 576 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:05:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2022-07-19 11:05:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 4237. [2022-07-19 11:05:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4236 states have (on average 1.3975448536355053) internal successors, (5920), 4236 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 5920 transitions. [2022-07-19 11:05:34,566 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 5920 transitions. Word has length 282 [2022-07-19 11:05:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:34,566 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 5920 transitions. [2022-07-19 11:05:34,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 5920 transitions. [2022-07-19 11:05:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-19 11:05:34,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:34,570 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:34,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-19 11:05:34,570 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 945282186, now seen corresponding path program 1 times [2022-07-19 11:05:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:34,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642748021] [2022-07-19 11:05:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:34,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 11:05:34,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:34,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642748021] [2022-07-19 11:05:34,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642748021] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:34,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215436367] [2022-07-19 11:05:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:34,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:34,728 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:05:34,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 11:05:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:35,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 11:05:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:35,804 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:35,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:35,837 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:35,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:35,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:35,861 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:35,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:35,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 477 proven. 64 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-19 11:05:35,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-19 11:05:35,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215436367] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:35,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:35,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-19 11:05:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671683218] [2022-07-19 11:05:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 11:05:35,987 INFO L87 Difference]: Start difference. First operand 4237 states and 5920 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:36,866 INFO L93 Difference]: Finished difference Result 8900 states and 12417 transitions. [2022-07-19 11:05:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:36,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2022-07-19 11:05:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:36,870 INFO L225 Difference]: With dead ends: 8900 [2022-07-19 11:05:36,870 INFO L226 Difference]: Without dead ends: 4686 [2022-07-19 11:05:36,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 11:05:36,873 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 103 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 415 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:05:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-07-19 11:05:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4243. [2022-07-19 11:05:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 4242 states have (on average 1.3936822253653938) internal successors, (5912), 4242 states have internal predecessors, (5912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 5912 transitions. [2022-07-19 11:05:36,954 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 5912 transitions. Word has length 290 [2022-07-19 11:05:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:36,954 INFO L495 AbstractCegarLoop]: Abstraction has 4243 states and 5912 transitions. [2022-07-19 11:05:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:36,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 5912 transitions. [2022-07-19 11:05:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-19 11:05:36,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:36,958 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:36,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 11:05:37,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-07-19 11:05:37,158 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:37,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1892320072, now seen corresponding path program 1 times [2022-07-19 11:05:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:37,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845482969] [2022-07-19 11:05:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:37,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-19 11:05:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845482969] [2022-07-19 11:05:37,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845482969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:37,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:37,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 11:05:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057236912] [2022-07-19 11:05:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:37,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 11:05:37,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 11:05:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:05:37,451 INFO L87 Difference]: Start difference. First operand 4243 states and 5912 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:39,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:41,255 INFO L93 Difference]: Finished difference Result 12188 states and 17005 transitions. [2022-07-19 11:05:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 11:05:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2022-07-19 11:05:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:41,262 INFO L225 Difference]: With dead ends: 12188 [2022-07-19 11:05:41,262 INFO L226 Difference]: Without dead ends: 7968 [2022-07-19 11:05:41,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-19 11:05:41,265 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 185 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:41,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1165 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 11:05:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-19 11:05:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7692. [2022-07-19 11:05:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7691 states have (on average 1.402808477441165) internal successors, (10789), 7691 states have internal predecessors, (10789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 10789 transitions. [2022-07-19 11:05:41,429 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 10789 transitions. Word has length 290 [2022-07-19 11:05:41,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:41,430 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 10789 transitions. [2022-07-19 11:05:41,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 10789 transitions. [2022-07-19 11:05:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-19 11:05:41,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:41,438 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-19 11:05:41,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-19 11:05:41,438 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:41,439 INFO L85 PathProgramCache]: Analyzing trace with hash -631099868, now seen corresponding path program 1 times [2022-07-19 11:05:41,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240601020] [2022-07-19 11:05:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-07-19 11:05:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:41,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240601020] [2022-07-19 11:05:41,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240601020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:41,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:41,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303238941] [2022-07-19 11:05:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:41,601 INFO L87 Difference]: Start difference. First operand 7692 states and 10789 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:42,400 INFO L93 Difference]: Finished difference Result 15573 states and 21809 transitions. [2022-07-19 11:05:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2022-07-19 11:05:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:42,408 INFO L225 Difference]: With dead ends: 15573 [2022-07-19 11:05:42,408 INFO L226 Difference]: Without dead ends: 7904 [2022-07-19 11:05:42,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:42,412 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 38 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:42,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 575 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-07-19 11:05:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 7692. [2022-07-19 11:05:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7691 states have (on average 1.400988167988558) internal successors, (10775), 7691 states have internal predecessors, (10775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 10775 transitions. [2022-07-19 11:05:42,599 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 10775 transitions. Word has length 290 [2022-07-19 11:05:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:42,599 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 10775 transitions. [2022-07-19 11:05:42,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 10775 transitions. [2022-07-19 11:05:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-19 11:05:42,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:42,608 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 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] [2022-07-19 11:05:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-19 11:05:42,608 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1567314995, now seen corresponding path program 1 times [2022-07-19 11:05:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830240549] [2022-07-19 11:05:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-19 11:05:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830240549] [2022-07-19 11:05:42,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830240549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:42,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:42,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617947218] [2022-07-19 11:05:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:42,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:42,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:42,759 INFO L87 Difference]: Start difference. First operand 7692 states and 10775 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:43,459 INFO L93 Difference]: Finished difference Result 15517 states and 21711 transitions. [2022-07-19 11:05:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2022-07-19 11:05:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:43,466 INFO L225 Difference]: With dead ends: 15517 [2022-07-19 11:05:43,466 INFO L226 Difference]: Without dead ends: 7792 [2022-07-19 11:05:43,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:43,471 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 26 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:43,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 573 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-07-19 11:05:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7636. [2022-07-19 11:05:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 7635 states have (on average 1.4020956123117223) internal successors, (10705), 7635 states have internal predecessors, (10705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 10705 transitions. [2022-07-19 11:05:43,660 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 10705 transitions. Word has length 291 [2022-07-19 11:05:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:43,661 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 10705 transitions. [2022-07-19 11:05:43,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 10705 transitions. [2022-07-19 11:05:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-19 11:05:43,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:43,667 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 3, 3, 2, 2, 2, 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] [2022-07-19 11:05:43,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-19 11:05:43,668 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1976633504, now seen corresponding path program 1 times [2022-07-19 11:05:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:43,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612109360] [2022-07-19 11:05:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-07-19 11:05:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:43,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612109360] [2022-07-19 11:05:43,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612109360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:43,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:43,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805329774] [2022-07-19 11:05:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:43,823 INFO L87 Difference]: Start difference. First operand 7636 states and 10705 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:44,492 INFO L93 Difference]: Finished difference Result 15433 states and 21599 transitions. [2022-07-19 11:05:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2022-07-19 11:05:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:44,501 INFO L225 Difference]: With dead ends: 15433 [2022-07-19 11:05:44,501 INFO L226 Difference]: Without dead ends: 7820 [2022-07-19 11:05:44,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:44,506 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 35 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:44,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 573 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2022-07-19 11:05:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 7636. [2022-07-19 11:05:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 7635 states have (on average 1.4002619515389654) internal successors, (10691), 7635 states have internal predecessors, (10691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 10691 transitions. [2022-07-19 11:05:44,711 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 10691 transitions. Word has length 291 [2022-07-19 11:05:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:44,712 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 10691 transitions. [2022-07-19 11:05:44,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 10691 transitions. [2022-07-19 11:05:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-19 11:05:44,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:44,718 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 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] [2022-07-19 11:05:44,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-19 11:05:44,718 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:44,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1437243622, now seen corresponding path program 1 times [2022-07-19 11:05:44,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:44,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505091661] [2022-07-19 11:05:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:44,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-19 11:05:44,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:44,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505091661] [2022-07-19 11:05:44,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505091661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:44,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:44,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:05:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810204546] [2022-07-19 11:05:44,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:44,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:05:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:05:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:44,863 INFO L87 Difference]: Start difference. First operand 7636 states and 10691 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:46,224 INFO L93 Difference]: Finished difference Result 21900 states and 30699 transitions. [2022-07-19 11:05:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:05:46,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2022-07-19 11:05:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:46,240 INFO L225 Difference]: With dead ends: 21900 [2022-07-19 11:05:46,240 INFO L226 Difference]: Without dead ends: 14287 [2022-07-19 11:05:46,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:05:46,247 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 131 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:46,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 922 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:05:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-07-19 11:05:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 14114. [2022-07-19 11:05:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14114 states, 14113 states have (on average 1.4042372280875788) internal successors, (19818), 14113 states have internal predecessors, (19818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14114 states to 14114 states and 19818 transitions. [2022-07-19 11:05:46,595 INFO L78 Accepts]: Start accepts. Automaton has 14114 states and 19818 transitions. Word has length 294 [2022-07-19 11:05:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:46,595 INFO L495 AbstractCegarLoop]: Abstraction has 14114 states and 19818 transitions. [2022-07-19 11:05:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14114 states and 19818 transitions. [2022-07-19 11:05:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-19 11:05:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:46,604 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:46,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-19 11:05:46,605 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1969274457, now seen corresponding path program 1 times [2022-07-19 11:05:46,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028355769] [2022-07-19 11:05:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-19 11:05:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:46,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028355769] [2022-07-19 11:05:46,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028355769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:46,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:46,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463560140] [2022-07-19 11:05:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:46,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:46,765 INFO L87 Difference]: Start difference. First operand 14114 states and 19818 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:47,710 INFO L93 Difference]: Finished difference Result 30256 states and 42339 transitions. [2022-07-19 11:05:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:47,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2022-07-19 11:05:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:47,727 INFO L225 Difference]: With dead ends: 30256 [2022-07-19 11:05:47,728 INFO L226 Difference]: Without dead ends: 16165 [2022-07-19 11:05:47,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:47,736 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 117 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:47,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 422 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16165 states. [2022-07-19 11:05:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16165 to 14296. [2022-07-19 11:05:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.393424274221756) internal successors, (19919), 14295 states have internal predecessors, (19919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19919 transitions. [2022-07-19 11:05:48,061 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19919 transitions. Word has length 299 [2022-07-19 11:05:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:48,062 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19919 transitions. [2022-07-19 11:05:48,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19919 transitions. [2022-07-19 11:05:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-19 11:05:48,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:48,070 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:48,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-19 11:05:48,071 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1325559243, now seen corresponding path program 1 times [2022-07-19 11:05:48,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:48,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334298699] [2022-07-19 11:05:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-19 11:05:48,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:48,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334298699] [2022-07-19 11:05:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334298699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:48,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:48,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820901590] [2022-07-19 11:05:48,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:48,263 INFO L87 Difference]: Start difference. First operand 14296 states and 19919 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:49,577 INFO L93 Difference]: Finished difference Result 28679 states and 39949 transitions. [2022-07-19 11:05:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:49,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2022-07-19 11:05:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:49,593 INFO L225 Difference]: With dead ends: 28679 [2022-07-19 11:05:49,593 INFO L226 Difference]: Without dead ends: 14406 [2022-07-19 11:05:49,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:49,602 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 48 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 582 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:05:49,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14406 states. [2022-07-19 11:05:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14406 to 14296. [2022-07-19 11:05:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3930045470444212) internal successors, (19913), 14295 states have internal predecessors, (19913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19913 transitions. [2022-07-19 11:05:50,033 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19913 transitions. Word has length 300 [2022-07-19 11:05:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:50,033 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19913 transitions. [2022-07-19 11:05:50,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19913 transitions. [2022-07-19 11:05:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-19 11:05:50,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:50,043 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:50,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-19 11:05:50,043 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1118538538, now seen corresponding path program 1 times [2022-07-19 11:05:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892280630] [2022-07-19 11:05:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 569 proven. 102 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-07-19 11:05:50,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:50,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892280630] [2022-07-19 11:05:50,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892280630] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:50,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637619329] [2022-07-19 11:05:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:50,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:50,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:05:50,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 11:05:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:51,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 11:05:51,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:51,509 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:51,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:05:51,534 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:05:51,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:51,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:05:51,562 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:05:51,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 11:05:51,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 11:05:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 570 proven. 96 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-07-19 11:05:51,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:05:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-07-19 11:05:51,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637619329] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:51,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 11:05:51,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 11 [2022-07-19 11:05:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755722116] [2022-07-19 11:05:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:51,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:51,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 11:05:51,641 INFO L87 Difference]: Start difference. First operand 14296 states and 19913 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:52,469 INFO L93 Difference]: Finished difference Result 30032 states and 41656 transitions. [2022-07-19 11:05:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:52,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2022-07-19 11:05:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:52,484 INFO L225 Difference]: With dead ends: 30032 [2022-07-19 11:05:52,484 INFO L226 Difference]: Without dead ends: 15759 [2022-07-19 11:05:52,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-19 11:05:52,491 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 90 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:52,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 487 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2022-07-19 11:05:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 14296. [2022-07-19 11:05:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3793634137810422) internal successors, (19718), 14295 states have internal predecessors, (19718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19718 transitions. [2022-07-19 11:05:52,818 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19718 transitions. Word has length 302 [2022-07-19 11:05:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:52,818 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19718 transitions. [2022-07-19 11:05:52,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19718 transitions. [2022-07-19 11:05:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-19 11:05:52,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:52,827 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:52,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 11:05:53,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:53,028 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:53,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:53,028 INFO L85 PathProgramCache]: Analyzing trace with hash -115556266, now seen corresponding path program 1 times [2022-07-19 11:05:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:53,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857376629] [2022-07-19 11:05:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:53,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-07-19 11:05:53,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:53,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857376629] [2022-07-19 11:05:53,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857376629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:53,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:53,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:53,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490103024] [2022-07-19 11:05:53,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:53,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:53,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:53,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:53,179 INFO L87 Difference]: Start difference. First operand 14296 states and 19718 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:54,646 INFO L93 Difference]: Finished difference Result 30088 states and 41439 transitions. [2022-07-19 11:05:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:54,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2022-07-19 11:05:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:54,663 INFO L225 Difference]: With dead ends: 30088 [2022-07-19 11:05:54,664 INFO L226 Difference]: Without dead ends: 15815 [2022-07-19 11:05:54,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:54,674 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:54,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 358 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:05:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15815 states. [2022-07-19 11:05:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15815 to 14296. [2022-07-19 11:05:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3594963273871983) internal successors, (19434), 14295 states have internal predecessors, (19434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19434 transitions. [2022-07-19 11:05:55,016 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19434 transitions. Word has length 303 [2022-07-19 11:05:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:55,017 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19434 transitions. [2022-07-19 11:05:55,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:55,017 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19434 transitions. [2022-07-19 11:05:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-19 11:05:55,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:55,026 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:55,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-19 11:05:55,026 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:55,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2042612913, now seen corresponding path program 1 times [2022-07-19 11:05:55,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:55,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116084896] [2022-07-19 11:05:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:55,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 570 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-19 11:05:55,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:55,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116084896] [2022-07-19 11:05:55,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116084896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:55,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:55,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:55,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872560842] [2022-07-19 11:05:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:55,198 INFO L87 Difference]: Start difference. First operand 14296 states and 19434 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:56,112 INFO L93 Difference]: Finished difference Result 28881 states and 39203 transitions. [2022-07-19 11:05:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2022-07-19 11:05:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:56,128 INFO L225 Difference]: With dead ends: 28881 [2022-07-19 11:05:56,128 INFO L226 Difference]: Without dead ends: 14608 [2022-07-19 11:05:56,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:56,137 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 24 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:56,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 569 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14608 states. [2022-07-19 11:05:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 14296. [2022-07-19 11:05:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3575376005596362) internal successors, (19406), 14295 states have internal predecessors, (19406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19406 transitions. [2022-07-19 11:05:56,489 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19406 transitions. Word has length 304 [2022-07-19 11:05:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:56,490 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19406 transitions. [2022-07-19 11:05:56,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19406 transitions. [2022-07-19 11:05:56,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-19 11:05:56,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:56,498 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:56,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-19 11:05:56,498 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:56,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash 807976658, now seen corresponding path program 1 times [2022-07-19 11:05:56,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:56,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113912087] [2022-07-19 11:05:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:56,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-19 11:05:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113912087] [2022-07-19 11:05:56,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113912087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:56,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:56,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:56,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586827722] [2022-07-19 11:05:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:56,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:56,667 INFO L87 Difference]: Start difference. First operand 14296 states and 19406 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:57,576 INFO L93 Difference]: Finished difference Result 28769 states and 39007 transitions. [2022-07-19 11:05:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2022-07-19 11:05:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:57,590 INFO L225 Difference]: With dead ends: 28769 [2022-07-19 11:05:57,590 INFO L226 Difference]: Without dead ends: 14160 [2022-07-19 11:05:57,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:57,600 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 20 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:57,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 561 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2022-07-19 11:05:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 13344. [2022-07-19 11:05:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 13343 states have (on average 1.3641609832871169) internal successors, (18202), 13343 states have internal predecessors, (18202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18202 transitions. [2022-07-19 11:05:57,938 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18202 transitions. Word has length 305 [2022-07-19 11:05:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:57,939 INFO L495 AbstractCegarLoop]: Abstraction has 13344 states and 18202 transitions. [2022-07-19 11:05:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18202 transitions. [2022-07-19 11:05:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-19 11:05:57,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:57,947 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 11:05:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-19 11:05:57,947 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1413227118, now seen corresponding path program 1 times [2022-07-19 11:05:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:57,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659018953] [2022-07-19 11:05:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-07-19 11:05:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659018953] [2022-07-19 11:05:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659018953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:58,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:58,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020214082] [2022-07-19 11:05:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:58,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:58,124 INFO L87 Difference]: Start difference. First operand 13344 states and 18202 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:58,805 INFO L93 Difference]: Finished difference Result 27369 states and 37309 transitions. [2022-07-19 11:05:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:58,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2022-07-19 11:05:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:58,820 INFO L225 Difference]: With dead ends: 27369 [2022-07-19 11:05:58,820 INFO L226 Difference]: Without dead ends: 14020 [2022-07-19 11:05:58,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:58,829 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 15 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:58,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 553 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:58,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14020 states. [2022-07-19 11:05:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14020 to 13344. [2022-07-19 11:05:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 13343 states have (on average 1.3641609832871169) internal successors, (18202), 13343 states have internal predecessors, (18202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18202 transitions. [2022-07-19 11:05:59,174 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18202 transitions. Word has length 312 [2022-07-19 11:05:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:59,174 INFO L495 AbstractCegarLoop]: Abstraction has 13344 states and 18202 transitions. [2022-07-19 11:05:59,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18202 transitions. [2022-07-19 11:05:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-19 11:05:59,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:59,182 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 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] [2022-07-19 11:05:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-19 11:05:59,183 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash 584613866, now seen corresponding path program 1 times [2022-07-19 11:05:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:59,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314868490] [2022-07-19 11:05:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:59,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2022-07-19 11:05:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314868490] [2022-07-19 11:05:59,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314868490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:59,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:59,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:05:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600631549] [2022-07-19 11:05:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:59,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:05:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:05:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:59,794 INFO L87 Difference]: Start difference. First operand 13344 states and 18202 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:06:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:06:00,993 INFO L93 Difference]: Finished difference Result 26685 states and 36400 transitions. [2022-07-19 11:06:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:06:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 319 [2022-07-19 11:06:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:06:01,009 INFO L225 Difference]: With dead ends: 26685 [2022-07-19 11:06:01,009 INFO L226 Difference]: Without dead ends: 13344 [2022-07-19 11:06:01,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:06:01,022 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:06:01,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:06:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13344 states. [2022-07-19 11:06:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13344 to 13344. [2022-07-19 11:06:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 13343 states have (on average 1.3640860376227235) internal successors, (18201), 13343 states have internal predecessors, (18201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:06:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18201 transitions. [2022-07-19 11:06:01,384 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18201 transitions. Word has length 319 [2022-07-19 11:06:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:06:01,384 INFO L495 AbstractCegarLoop]: Abstraction has 13344 states and 18201 transitions. [2022-07-19 11:06:01,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:06:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18201 transitions. [2022-07-19 11:06:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-19 11:06:01,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:06:01,392 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 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] [2022-07-19 11:06:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-19 11:06:01,392 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:06:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:06:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash -23101204, now seen corresponding path program 1 times [2022-07-19 11:06:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:06:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840530258] [2022-07-19 11:06:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:06:01,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:06:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:06:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 399 proven. 413 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-19 11:06:02,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:06:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840530258] [2022-07-19 11:06:02,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840530258] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:06:02,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205902770] [2022-07-19 11:06:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:06:02,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:06:02,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:06:02,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:06:02,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 11:06:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:06:03,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-19 11:06:03,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:06:03,845 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 11:06:03,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 11:06:03,928 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-19 11:06:03,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-19 11:06:03,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:06:03,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 11:06:03,990 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 11:06:03,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2022-07-19 11:06:03,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:04,043 INFO L356 Elim1Store]: treesize reduction 68, result has 46.5 percent of original size [2022-07-19 11:06:04,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-07-19 11:06:04,065 INFO L356 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-07-19 11:06:04,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 99 [2022-07-19 11:06:04,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 112 [2022-07-19 11:06:04,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:04,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 151 [2022-07-19 11:06:04,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:04,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 133 [2022-07-19 11:06:04,359 INFO L356 Elim1Store]: treesize reduction 344, result has 22.5 percent of original size [2022-07-19 11:06:04,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 152 treesize of output 169 [2022-07-19 11:06:06,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 156 [2022-07-19 11:06:06,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,407 INFO L356 Elim1Store]: treesize reduction 258, result has 26.1 percent of original size [2022-07-19 11:06:06,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 168 treesize of output 185 [2022-07-19 11:06:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:06,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 185 [2022-07-19 11:06:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-07-19 11:06:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,282 INFO L356 Elim1Store]: treesize reduction 284, result has 18.6 percent of original size [2022-07-19 11:06:08,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 104 treesize of output 131 [2022-07-19 11:06:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 94 [2022-07-19 11:06:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 83 [2022-07-19 11:06:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-07-19 11:06:08,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:08,461 INFO L356 Elim1Store]: treesize reduction 215, result has 29.0 percent of original size [2022-07-19 11:06:08,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 156 [2022-07-19 11:06:09,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:09,513 INFO L356 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2022-07-19 11:06:09,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 161 treesize of output 156 [2022-07-19 11:06:09,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:09,561 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-19 11:06:09,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 164 [2022-07-19 11:06:09,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:09,662 INFO L356 Elim1Store]: treesize reduction 116, result has 47.5 percent of original size [2022-07-19 11:06:09,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 137 [2022-07-19 11:06:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 821 treesize of output 695 [2022-07-19 11:06:13,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:13,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 713 treesize of output 515 [2022-07-19 11:06:13,927 INFO L356 Elim1Store]: treesize reduction 557, result has 22.4 percent of original size [2022-07-19 11:06:13,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 533 treesize of output 564 [2022-07-19 11:07:48,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:48,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 816 treesize of output 614 [2022-07-19 11:07:49,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:49,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:49,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:49,187 INFO L356 Elim1Store]: treesize reduction 298, result has 30.2 percent of original size [2022-07-19 11:07:49,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 627 treesize of output 619 [2022-07-19 11:07:49,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:49,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:49,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:07:49,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 632 treesize of output 514 [2022-07-19 11:08:16,959 WARN L233 SmtUtils]: Spent 16.52s on a formula simplification. DAG size of input: 162 DAG size of output: 133 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 11:08:16,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:08:16,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 203 [2022-07-19 11:08:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:08:16,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 131 [2022-07-19 11:08:17,048 INFO L356 Elim1Store]: treesize reduction 214, result has 24.9 percent of original size [2022-07-19 11:08:17,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 150 treesize of output 168 [2022-07-19 11:08:17,213 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-19 11:08:17,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 35 [2022-07-19 11:08:17,320 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 11:08:17,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-19 11:08:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 445 proven. 402 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-19 11:08:17,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 11:08:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 582 proven. 140 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-19 11:08:19,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205902770] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 11:08:19,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 11:08:19,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 13] total 45 [2022-07-19 11:08:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144587678] [2022-07-19 11:08:19,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 11:08:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-19 11:08:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:08:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-19 11:08:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1635, Unknown=0, NotChecked=0, Total=1980 [2022-07-19 11:08:19,890 INFO L87 Difference]: Start difference. First operand 13344 states and 18201 transitions. Second operand has 45 states, 45 states have (on average 12.511111111111111) internal successors, (563), 45 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:08:22,624 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 []