./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 19:41:05,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 19:41:05,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 19:41:05,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 19:41:05,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 19:41:05,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 19:41:05,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 19:41:05,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 19:41:05,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 19:41:05,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 19:41:05,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 19:41:05,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 19:41:05,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 19:41:05,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 19:41:05,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 19:41:05,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 19:41:05,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 19:41:05,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 19:41:05,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 19:41:05,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 19:41:05,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 19:41:05,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 19:41:05,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 19:41:05,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 19:41:05,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 19:41:05,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 19:41:05,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 19:41:05,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 19:41:05,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 19:41:05,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 19:41:05,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 19:41:05,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 19:41:05,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 19:41:05,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 19:41:05,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 19:41:05,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 19:41:05,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 19:41:05,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 19:41:05,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 19:41:05,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 19:41:05,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 19:41:05,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 19:41:05,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 19:41:05,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 19:41:05,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 19:41:05,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 19:41:05,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 19:41:05,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 19:41:05,840 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 19:41:05,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 19:41:05,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 19:41:05,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 19:41:05,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 19:41:05,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 19:41:05,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 19:41:05,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 19:41:05,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 19:41:05,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 19:41:05,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 19:41:05,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 19:41:05,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 19:41:05,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:41:05,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 19:41:05,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 19:41:05,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 19:41:05,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2021-11-02 19:41:06,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 19:41:06,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 19:41:06,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 19:41:06,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 19:41:06,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 19:41:06,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-02 19:41:06,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c77c8be2/9f7bc37e6d0c4f41ab666ab7faecf63d/FLAGeb60405fc [2021-11-02 19:41:06,653 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 19:41:06,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-02 19:41:06,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c77c8be2/9f7bc37e6d0c4f41ab666ab7faecf63d/FLAGeb60405fc [2021-11-02 19:41:07,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c77c8be2/9f7bc37e6d0c4f41ab666ab7faecf63d [2021-11-02 19:41:07,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 19:41:07,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 19:41:07,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 19:41:07,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 19:41:07,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 19:41:07,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:41:07" (1/1) ... [2021-11-02 19:41:07,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f0b904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:07, skipping insertion in model container [2021-11-02 19:41:07,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:41:07" (1/1) ... [2021-11-02 19:41:07,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 19:41:07,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 19:41:07,659 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-11-02 19:41:08,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:41:08,199 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 19:41:08,265 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-11-02 19:41:08,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:41:08,467 INFO L208 MainTranslator]: Completed translation [2021-11-02 19:41:08,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08 WrapperNode [2021-11-02 19:41:08,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 19:41:08,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 19:41:08,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 19:41:08,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 19:41:08,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:08,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:08,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 19:41:08,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 19:41:08,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 19:41:08,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 19:41:08,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:08,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:08,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:08,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:08,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:09,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:09,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:09,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 19:41:09,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 19:41:09,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 19:41:09,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 19:41:09,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (1/1) ... [2021-11-02 19:41:09,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:41:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:41:09,122 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) [2021-11-02 19:41:09,135 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 [2021-11-02 19:41:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-02 19:41:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 19:41:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 19:41:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 19:41:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 19:41:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 19:41:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 19:41:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 19:41:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 19:41:09,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 19:41:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 19:41:18,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 19:41:18,159 INFO L299 CfgBuilder]: Removed 1746 assume(true) statements. [2021-11-02 19:41:18,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:41:18 BoogieIcfgContainer [2021-11-02 19:41:18,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 19:41:18,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 19:41:18,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 19:41:18,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 19:41:18,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:41:07" (1/3) ... [2021-11-02 19:41:18,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25eb961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:41:18, skipping insertion in model container [2021-11-02 19:41:18,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:41:08" (2/3) ... [2021-11-02 19:41:18,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25eb961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:41:18, skipping insertion in model container [2021-11-02 19:41:18,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:41:18" (3/3) ... [2021-11-02 19:41:18,169 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-02 19:41:18,172 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 19:41:18,172 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-02 19:41:18,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 19:41:18,221 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 19:41:18,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-02 19:41:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 2043 states, 1971 states have (on average 1.4662607813292745) internal successors, (2890), 2042 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:41:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 19:41:18,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:41:18,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:41:18,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:41:18,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:41:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash -196032821, now seen corresponding path program 1 times [2021-11-02 19:41:18,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:41:18,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559794651] [2021-11-02 19:41:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:41:18,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:41:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:41:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:41:18,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:41:18,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559794651] [2021-11-02 19:41:18,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559794651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:41:18,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:41:18,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:41:18,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019218937] [2021-11-02 19:41:18,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:41:18,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:41:18,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:41:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:41:18,853 INFO L87 Difference]: Start difference. First operand has 2043 states, 1971 states have (on average 1.4662607813292745) internal successors, (2890), 2042 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:41:21,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:41:39,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:42:00,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:42:00,134 INFO L93 Difference]: Finished difference Result 4082 states and 5775 transitions. [2021-11-02 19:42:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:42:00,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-02 19:42:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:42:00,155 INFO L225 Difference]: With dead ends: 4082 [2021-11-02 19:42:00,155 INFO L226 Difference]: Without dead ends: 2033 [2021-11-02 19:42:00,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:42:00,163 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 5513 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38509.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5513 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40769.11ms IncrementalHoareTripleChecker+Time [2021-11-02 19:42:00,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 5514 Unknown, 0 Unchecked, 69.49ms Time], IncrementalHoareTripleChecker [0 Valid, 5513 Invalid, 1 Unknown, 0 Unchecked, 40769.11ms Time] [2021-11-02 19:42:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2021-11-02 19:42:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2033. [2021-11-02 19:42:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1962 states have (on average 1.400611620795107) internal successors, (2748), 2032 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:42:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2748 transitions. [2021-11-02 19:42:00,244 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2748 transitions. Word has length 31 [2021-11-02 19:42:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:42:00,244 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 2748 transitions. [2021-11-02 19:42:00,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:42:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2748 transitions. [2021-11-02 19:42:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 19:42:00,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:42:00,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:42:00,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 19:42:00,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:42:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:42:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2135002091, now seen corresponding path program 1 times [2021-11-02 19:42:00,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:42:00,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680583658] [2021-11-02 19:42:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:42:00,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:42:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:42:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:42:00,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:42:00,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680583658] [2021-11-02 19:42:00,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680583658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:42:00,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:42:00,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:42:00,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487232081] [2021-11-02 19:42:00,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:42:00,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:42:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:42:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:42:00,493 INFO L87 Difference]: Start difference. First operand 2033 states and 2748 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:42:02,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:42:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:42:40,218 INFO L93 Difference]: Finished difference Result 5463 states and 7385 transitions. [2021-11-02 19:42:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:42:40,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-02 19:42:40,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:42:40,229 INFO L225 Difference]: With dead ends: 5463 [2021-11-02 19:42:40,229 INFO L226 Difference]: Without dead ends: 3481 [2021-11-02 19:42:40,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:42:40,234 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1946 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 5490 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37055.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39246.74ms IncrementalHoareTripleChecker+Time [2021-11-02 19:42:40,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1946 Valid, 0 Invalid, 5492 Unknown, 0 Unchecked, 53.13ms Time], IncrementalHoareTripleChecker [1 Valid, 5490 Invalid, 1 Unknown, 0 Unchecked, 39246.74ms Time] [2021-11-02 19:42:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-11-02 19:42:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3339. [2021-11-02 19:42:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3268 states have (on average 1.407282741738066) internal successors, (4599), 3338 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:42:40,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4599 transitions. [2021-11-02 19:42:40,293 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4599 transitions. Word has length 32 [2021-11-02 19:42:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:42:40,294 INFO L470 AbstractCegarLoop]: Abstraction has 3339 states and 4599 transitions. [2021-11-02 19:42:40,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:42:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4599 transitions. [2021-11-02 19:42:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 19:42:40,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:42:40,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:42:40,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 19:42:40,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:42:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:42:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash -39044696, now seen corresponding path program 1 times [2021-11-02 19:42:40,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:42:40,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377033562] [2021-11-02 19:42:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:42:40,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:42:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:42:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:42:40,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:42:40,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377033562] [2021-11-02 19:42:40,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377033562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:42:40,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:42:40,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:42:40,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569520892] [2021-11-02 19:42:40,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:42:40,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:42:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:42:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:42:40,535 INFO L87 Difference]: Start difference. First operand 3339 states and 4599 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:42:42,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:43:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:43:25,642 INFO L93 Difference]: Finished difference Result 8431 states and 11659 transitions. [2021-11-02 19:43:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:43:25,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-02 19:43:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:43:25,658 INFO L225 Difference]: With dead ends: 8431 [2021-11-02 19:43:25,658 INFO L226 Difference]: Without dead ends: 5143 [2021-11-02 19:43:25,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:43:25,665 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1637 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 6214 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42378.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.63ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44660.44ms IncrementalHoareTripleChecker+Time [2021-11-02 19:43:25,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1637 Valid, 0 Invalid, 6218 Unknown, 0 Unchecked, 28.63ms Time], IncrementalHoareTripleChecker [3 Valid, 6214 Invalid, 1 Unknown, 0 Unchecked, 44660.44ms Time] [2021-11-02 19:43:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2021-11-02 19:43:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5039. [2021-11-02 19:43:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 4968 states have (on average 1.421497584541063) internal successors, (7062), 5038 states have internal predecessors, (7062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:43:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 7062 transitions. [2021-11-02 19:43:25,741 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 7062 transitions. Word has length 33 [2021-11-02 19:43:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:43:25,741 INFO L470 AbstractCegarLoop]: Abstraction has 5039 states and 7062 transitions. [2021-11-02 19:43:25,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:43:25,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 7062 transitions. [2021-11-02 19:43:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 19:43:25,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:43:25,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:43:25,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 19:43:25,747 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:43:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:43:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1530761963, now seen corresponding path program 1 times [2021-11-02 19:43:25,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:43:25,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125044140] [2021-11-02 19:43:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:43:25,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:43:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:43:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:43:25,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:43:25,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125044140] [2021-11-02 19:43:25,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125044140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:43:25,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:43:25,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:43:25,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262855298] [2021-11-02 19:43:25,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:43:25,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:43:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:43:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:43:25,998 INFO L87 Difference]: Start difference. First operand 5039 states and 7062 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:43:28,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:44:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:44:10,999 INFO L93 Difference]: Finished difference Result 14933 states and 20967 transitions. [2021-11-02 19:44:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:44:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-02 19:44:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:44:11,026 INFO L225 Difference]: With dead ends: 14933 [2021-11-02 19:44:11,027 INFO L226 Difference]: Without dead ends: 9945 [2021-11-02 19:44:11,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:44:11,036 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2614 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 6200 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41989.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44447.50ms IncrementalHoareTripleChecker+Time [2021-11-02 19:44:11,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2614 Valid, 0 Invalid, 6204 Unknown, 0 Unchecked, 30.78ms Time], IncrementalHoareTripleChecker [3 Valid, 6200 Invalid, 1 Unknown, 0 Unchecked, 44447.50ms Time] [2021-11-02 19:44:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2021-11-02 19:44:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 9807. [2021-11-02 19:44:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9807 states, 9736 states have (on average 1.4260476581758423) internal successors, (13884), 9806 states have internal predecessors, (13884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:44:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 13884 transitions. [2021-11-02 19:44:11,188 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 13884 transitions. Word has length 36 [2021-11-02 19:44:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:44:11,188 INFO L470 AbstractCegarLoop]: Abstraction has 9807 states and 13884 transitions. [2021-11-02 19:44:11,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:44:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 13884 transitions. [2021-11-02 19:44:11,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 19:44:11,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:44:11,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:44:11,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 19:44:11,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:44:11,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:44:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1518735807, now seen corresponding path program 1 times [2021-11-02 19:44:11,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:44:11,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29944246] [2021-11-02 19:44:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:44:11,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:44:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:44:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:44:11,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:44:11,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29944246] [2021-11-02 19:44:11,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29944246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:44:11,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:44:11,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:44:11,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443301461] [2021-11-02 19:44:11,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:44:11,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:44:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:44:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:44:11,449 INFO L87 Difference]: Start difference. First operand 9807 states and 13884 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2021-11-02 19:44:13,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:44:57,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:44:57,499 INFO L93 Difference]: Finished difference Result 26910 states and 38136 transitions. [2021-11-02 19:44:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:44:57,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2021-11-02 19:44:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:44:57,534 INFO L225 Difference]: With dead ends: 26910 [2021-11-02 19:44:57,534 INFO L226 Difference]: Without dead ends: 17154 [2021-11-02 19:44:57,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:44:57,546 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2195 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 6221 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43098.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45471.96ms IncrementalHoareTripleChecker+Time [2021-11-02 19:44:57,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 0 Invalid, 6223 Unknown, 0 Unchecked, 32.16ms Time], IncrementalHoareTripleChecker [1 Valid, 6221 Invalid, 1 Unknown, 0 Unchecked, 45471.96ms Time] [2021-11-02 19:44:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17154 states. [2021-11-02 19:44:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17154 to 17037. [2021-11-02 19:44:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17037 states, 16966 states have (on average 1.4288577154308617) internal successors, (24242), 17036 states have internal predecessors, (24242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:44:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17037 states to 17037 states and 24242 transitions. [2021-11-02 19:44:57,798 INFO L78 Accepts]: Start accepts. Automaton has 17037 states and 24242 transitions. Word has length 38 [2021-11-02 19:44:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:44:57,798 INFO L470 AbstractCegarLoop]: Abstraction has 17037 states and 24242 transitions. [2021-11-02 19:44:57,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2021-11-02 19:44:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 17037 states and 24242 transitions. [2021-11-02 19:44:57,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 19:44:57,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:44:57,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:44:57,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 19:44:57,800 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:44:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:44:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2011662593, now seen corresponding path program 1 times [2021-11-02 19:44:57,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:44:57,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755403646] [2021-11-02 19:44:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:44:57,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:44:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:44:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:44:57,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:44:57,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755403646] [2021-11-02 19:44:57,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755403646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:44:57,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:44:57,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:44:57,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683131471] [2021-11-02 19:44:57,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:44:57,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:44:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:44:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:44:57,996 INFO L87 Difference]: Start difference. First operand 17037 states and 24242 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:45:00,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:45:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:45:46,329 INFO L93 Difference]: Finished difference Result 48496 states and 68925 transitions. [2021-11-02 19:45:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:45:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-02 19:45:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:45:46,386 INFO L225 Difference]: With dead ends: 48496 [2021-11-02 19:45:46,386 INFO L226 Difference]: Without dead ends: 31510 [2021-11-02 19:45:46,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:45:46,405 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2420 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 6653 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45056.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47555.22ms IncrementalHoareTripleChecker+Time [2021-11-02 19:45:46,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2420 Valid, 0 Invalid, 6655 Unknown, 0 Unchecked, 32.00ms Time], IncrementalHoareTripleChecker [1 Valid, 6653 Invalid, 1 Unknown, 0 Unchecked, 47555.22ms Time] [2021-11-02 19:45:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31510 states. [2021-11-02 19:45:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31510 to 31353. [2021-11-02 19:45:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31353 states, 31282 states have (on average 1.4266990601623937) internal successors, (44630), 31352 states have internal predecessors, (44630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:45:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31353 states to 31353 states and 44630 transitions. [2021-11-02 19:45:46,857 INFO L78 Accepts]: Start accepts. Automaton has 31353 states and 44630 transitions. Word has length 39 [2021-11-02 19:45:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:45:46,858 INFO L470 AbstractCegarLoop]: Abstraction has 31353 states and 44630 transitions. [2021-11-02 19:45:46,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:45:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 31353 states and 44630 transitions. [2021-11-02 19:45:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 19:45:46,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:45:46,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:45:46,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 19:45:46,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:45:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:45:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1969780938, now seen corresponding path program 1 times [2021-11-02 19:45:46,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:45:46,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325249769] [2021-11-02 19:45:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:45:46,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:45:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:45:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:45:47,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:45:47,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325249769] [2021-11-02 19:45:47,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325249769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:45:47,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:45:47,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:45:47,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423604560] [2021-11-02 19:45:47,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:45:47,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:45:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:45:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:45:47,188 INFO L87 Difference]: Start difference. First operand 31353 states and 44630 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:45:49,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:46:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:46:37,818 INFO L93 Difference]: Finished difference Result 89721 states and 127708 transitions. [2021-11-02 19:46:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:46:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-02 19:46:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:46:37,919 INFO L225 Difference]: With dead ends: 89721 [2021-11-02 19:46:37,919 INFO L226 Difference]: Without dead ends: 58419 [2021-11-02 19:46:37,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:46:37,964 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2446 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 6888 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47038.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49579.70ms IncrementalHoareTripleChecker+Time [2021-11-02 19:46:37,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2446 Valid, 0 Invalid, 6890 Unknown, 0 Unchecked, 32.90ms Time], IncrementalHoareTripleChecker [1 Valid, 6888 Invalid, 1 Unknown, 0 Unchecked, 49579.70ms Time] [2021-11-02 19:46:38,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58419 states. [2021-11-02 19:46:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58419 to 58273. [2021-11-02 19:46:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58273 states, 58202 states have (on average 1.4264458266038968) internal successors, (83022), 58272 states have internal predecessors, (83022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:46:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58273 states to 58273 states and 83022 transitions. [2021-11-02 19:46:39,012 INFO L78 Accepts]: Start accepts. Automaton has 58273 states and 83022 transitions. Word has length 40 [2021-11-02 19:46:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:46:39,014 INFO L470 AbstractCegarLoop]: Abstraction has 58273 states and 83022 transitions. [2021-11-02 19:46:39,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:46:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 58273 states and 83022 transitions. [2021-11-02 19:46:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 19:46:39,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:46:39,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:46:39,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 19:46:39,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:46:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:46:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1241209579, now seen corresponding path program 1 times [2021-11-02 19:46:39,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:46:39,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698089359] [2021-11-02 19:46:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:46:39,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:46:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:46:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:46:39,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:46:39,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698089359] [2021-11-02 19:46:39,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698089359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:46:39,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:46:39,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 19:46:39,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594442176] [2021-11-02 19:46:39,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 19:46:39,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:46:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 19:46:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:46:39,688 INFO L87 Difference]: Start difference. First operand 58273 states and 83022 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:46:41,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:47:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:47:39,727 INFO L93 Difference]: Finished difference Result 116817 states and 166384 transitions. [2021-11-02 19:47:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 19:47:39,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-02 19:47:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:47:39,819 INFO L225 Difference]: With dead ends: 116817 [2021-11-02 19:47:39,819 INFO L226 Difference]: Without dead ends: 58595 [2021-11-02 19:47:39,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 337.98ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 19:47:39,879 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10698 mSDsluCounter, 5715 mSDsCounter, 0 mSdLazyCounter, 8542 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55334.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10698 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58330.58ms IncrementalHoareTripleChecker+Time [2021-11-02 19:47:39,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10698 Valid, 0 Invalid, 8546 Unknown, 0 Unchecked, 102.93ms Time], IncrementalHoareTripleChecker [3 Valid, 8542 Invalid, 1 Unknown, 0 Unchecked, 58330.58ms Time] [2021-11-02 19:47:39,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58595 states. [2021-11-02 19:47:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58595 to 29199. [2021-11-02 19:47:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29199 states, 29128 states have (on average 1.42742378467454) internal successors, (41578), 29198 states have internal predecessors, (41578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:47:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29199 states to 29199 states and 41578 transitions. [2021-11-02 19:47:40,725 INFO L78 Accepts]: Start accepts. Automaton has 29199 states and 41578 transitions. Word has length 45 [2021-11-02 19:47:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:47:40,727 INFO L470 AbstractCegarLoop]: Abstraction has 29199 states and 41578 transitions. [2021-11-02 19:47:40,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:47:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 29199 states and 41578 transitions. [2021-11-02 19:47:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 19:47:40,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:47:40,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:47:40,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 19:47:40,728 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:47:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:47:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1183951277, now seen corresponding path program 1 times [2021-11-02 19:47:40,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:47:40,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137646299] [2021-11-02 19:47:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:47:40,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:47:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:47:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:47:41,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:47:41,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137646299] [2021-11-02 19:47:41,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137646299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:47:41,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:47:41,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:47:41,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426196593] [2021-11-02 19:47:41,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:47:41,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:47:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:47:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:47:41,020 INFO L87 Difference]: Start difference. First operand 29199 states and 41578 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:47:43,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:48:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:48:07,440 INFO L93 Difference]: Finished difference Result 29199 states and 41578 transitions. [2021-11-02 19:48:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:48:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-02 19:48:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:48:07,511 INFO L225 Difference]: With dead ends: 29199 [2021-11-02 19:48:07,511 INFO L226 Difference]: Without dead ends: 29187 [2021-11-02 19:48:07,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:07,519 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1867 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24221.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25802.52ms IncrementalHoareTripleChecker+Time [2021-11-02 19:48:07,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1867 Valid, 0 Invalid, 3581 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [11 Valid, 3569 Invalid, 1 Unknown, 0 Unchecked, 25802.52ms Time] [2021-11-02 19:48:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29187 states. [2021-11-02 19:48:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29187 to 29187. [2021-11-02 19:48:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29187 states, 29122 states have (on average 1.424730444337614) internal successors, (41491), 29186 states have internal predecessors, (41491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29187 states to 29187 states and 41491 transitions. [2021-11-02 19:48:08,175 INFO L78 Accepts]: Start accepts. Automaton has 29187 states and 41491 transitions. Word has length 45 [2021-11-02 19:48:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:48:08,176 INFO L470 AbstractCegarLoop]: Abstraction has 29187 states and 41491 transitions. [2021-11-02 19:48:08,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 29187 states and 41491 transitions. [2021-11-02 19:48:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 19:48:08,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:48:08,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:48:08,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 19:48:08,179 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:48:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:48:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1952210908, now seen corresponding path program 1 times [2021-11-02 19:48:08,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:48:08,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478266619] [2021-11-02 19:48:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:48:08,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:48:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:48:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:48:08,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:48:08,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478266619] [2021-11-02 19:48:08,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478266619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:48:08,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:48:08,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:48:08,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558799048] [2021-11-02 19:48:08,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:48:08,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:48:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:48:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:08,488 INFO L87 Difference]: Start difference. First operand 29187 states and 41491 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:10,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:48:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:48:44,187 INFO L93 Difference]: Finished difference Result 63914 states and 90903 transitions. [2021-11-02 19:48:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:48:44,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-02 19:48:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:48:44,247 INFO L225 Difference]: With dead ends: 63914 [2021-11-02 19:48:44,247 INFO L226 Difference]: Without dead ends: 34807 [2021-11-02 19:48:44,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:44,273 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 836 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32887.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.05ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34797.04ms IncrementalHoareTripleChecker+Time [2021-11-02 19:48:44,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 0 Invalid, 5092 Unknown, 0 Unchecked, 24.05ms Time], IncrementalHoareTripleChecker [74 Valid, 5017 Invalid, 1 Unknown, 0 Unchecked, 34797.04ms Time] [2021-11-02 19:48:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34807 states. [2021-11-02 19:48:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34807 to 34469. [2021-11-02 19:48:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34469 states, 34414 states have (on average 1.412535595978381) internal successors, (48611), 34468 states have internal predecessors, (48611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34469 states to 34469 states and 48611 transitions. [2021-11-02 19:48:45,068 INFO L78 Accepts]: Start accepts. Automaton has 34469 states and 48611 transitions. Word has length 46 [2021-11-02 19:48:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:48:45,069 INFO L470 AbstractCegarLoop]: Abstraction has 34469 states and 48611 transitions. [2021-11-02 19:48:45,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 34469 states and 48611 transitions. [2021-11-02 19:48:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 19:48:45,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:48:45,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:48:45,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 19:48:45,072 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:48:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:48:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash -388990825, now seen corresponding path program 1 times [2021-11-02 19:48:45,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:48:45,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111582448] [2021-11-02 19:48:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:48:45,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:48:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:48:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 19:48:45,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:48:45,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111582448] [2021-11-02 19:48:45,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111582448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:48:45,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:48:45,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:48:45,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731836123] [2021-11-02 19:48:45,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:48:45,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:48:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:48:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:45,444 INFO L87 Difference]: Start difference. First operand 34469 states and 48611 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:47,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:49:07,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:49:07,017 INFO L93 Difference]: Finished difference Result 34469 states and 48611 transitions. [2021-11-02 19:49:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:49:07,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-02 19:49:07,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:49:07,059 INFO L225 Difference]: With dead ends: 34469 [2021-11-02 19:49:07,059 INFO L226 Difference]: Without dead ends: 34462 [2021-11-02 19:49:07,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:49:07,068 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2617 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19411.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20823.17ms IncrementalHoareTripleChecker+Time [2021-11-02 19:49:07,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 0 Invalid, 2752 Unknown, 0 Unchecked, 15.08ms Time], IncrementalHoareTripleChecker [0 Valid, 2751 Invalid, 1 Unknown, 0 Unchecked, 20823.17ms Time] [2021-11-02 19:49:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34462 states. [2021-11-02 19:49:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34462 to 34459. [2021-11-02 19:49:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34459 states, 34405 states have (on average 1.4116552826624038) internal successors, (48568), 34458 states have internal predecessors, (48568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:49:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34459 states to 34459 states and 48568 transitions. [2021-11-02 19:49:07,814 INFO L78 Accepts]: Start accepts. Automaton has 34459 states and 48568 transitions. Word has length 47 [2021-11-02 19:49:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:49:07,814 INFO L470 AbstractCegarLoop]: Abstraction has 34459 states and 48568 transitions. [2021-11-02 19:49:07,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:49:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 34459 states and 48568 transitions. [2021-11-02 19:49:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 19:49:07,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:49:07,816 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:49:07,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 19:49:07,816 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:49:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:49:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1330849789, now seen corresponding path program 1 times [2021-11-02 19:49:07,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:49:07,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430053280] [2021-11-02 19:49:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:49:07,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:49:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:49:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 19:49:08,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:49:08,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430053280] [2021-11-02 19:49:08,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430053280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:49:08,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:49:08,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:49:08,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863854318] [2021-11-02 19:49:08,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:49:08,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:49:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:49:08,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:49:08,062 INFO L87 Difference]: Start difference. First operand 34459 states and 48568 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-11-02 19:49:10,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:49:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:49:37,029 INFO L93 Difference]: Finished difference Result 68786 states and 97009 transitions. [2021-11-02 19:49:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:49:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 77 [2021-11-02 19:49:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:49:37,147 INFO L225 Difference]: With dead ends: 68786 [2021-11-02 19:49:37,147 INFO L226 Difference]: Without dead ends: 34407 [2021-11-02 19:49:37,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:49:37,177 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2175 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26324.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.22ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27968.01ms IncrementalHoareTripleChecker+Time [2021-11-02 19:49:37,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2175 Valid, 0 Invalid, 4148 Unknown, 0 Unchecked, 20.22ms Time], IncrementalHoareTripleChecker [69 Valid, 4078 Invalid, 1 Unknown, 0 Unchecked, 27968.01ms Time] [2021-11-02 19:49:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34407 states. [2021-11-02 19:49:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34407 to 33816. [2021-11-02 19:49:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33816 states, 33791 states have (on average 1.3964665147524489) internal successors, (47188), 33815 states have internal predecessors, (47188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:49:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33816 states to 33816 states and 47188 transitions. [2021-11-02 19:49:38,038 INFO L78 Accepts]: Start accepts. Automaton has 33816 states and 47188 transitions. Word has length 77 [2021-11-02 19:49:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:49:38,039 INFO L470 AbstractCegarLoop]: Abstraction has 33816 states and 47188 transitions. [2021-11-02 19:49:38,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-11-02 19:49:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 33816 states and 47188 transitions. [2021-11-02 19:49:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 19:49:38,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:49:38,043 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:49:38,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 19:49:38,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:49:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:49:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -53115874, now seen corresponding path program 1 times [2021-11-02 19:49:38,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:49:38,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088442012] [2021-11-02 19:49:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:49:38,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:49:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:49:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 19:49:38,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:49:38,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088442012] [2021-11-02 19:49:38,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088442012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:49:38,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:49:38,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:49:38,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602995319] [2021-11-02 19:49:38,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:49:38,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:49:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:49:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:49:38,472 INFO L87 Difference]: Start difference. First operand 33816 states and 47188 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) [2021-11-02 19:49:40,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:50:11,481 INFO L93 Difference]: Finished difference Result 33816 states and 47188 transitions. [2021-11-02 19:50:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:50:11,481 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 83 [2021-11-02 19:50:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:50:11,521 INFO L225 Difference]: With dead ends: 33816 [2021-11-02 19:50:11,522 INFO L226 Difference]: Without dead ends: 33804 [2021-11-02 19:50:11,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:50:11,533 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 737 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 4502 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30515.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.13ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32274.36ms IncrementalHoareTripleChecker+Time [2021-11-02 19:50:11,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 0 Invalid, 4512 Unknown, 0 Unchecked, 21.13ms Time], IncrementalHoareTripleChecker [9 Valid, 4502 Invalid, 1 Unknown, 0 Unchecked, 32274.36ms Time] [2021-11-02 19:50:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33804 states. [2021-11-02 19:50:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33804 to 33804. [2021-11-02 19:50:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33804 states, 33785 states have (on average 1.392274678111588) internal successors, (47038), 33803 states have internal predecessors, (47038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:50:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33804 states to 33804 states and 47038 transitions. [2021-11-02 19:50:12,235 INFO L78 Accepts]: Start accepts. Automaton has 33804 states and 47038 transitions. Word has length 83 [2021-11-02 19:50:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:50:12,236 INFO L470 AbstractCegarLoop]: Abstraction has 33804 states and 47038 transitions. [2021-11-02 19:50:12,236 INFO L471 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) [2021-11-02 19:50:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 33804 states and 47038 transitions. [2021-11-02 19:50:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 19:50:12,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:50:12,271 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:50:12,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 19:50:12,271 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:50:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:50:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash -116469262, now seen corresponding path program 1 times [2021-11-02 19:50:12,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:50:12,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179323933] [2021-11-02 19:50:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:50:12,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:50:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:50:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 19:50:12,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:50:12,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179323933] [2021-11-02 19:50:12,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179323933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 19:50:12,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219857864] [2021-11-02 19:50:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:50:12,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:50:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:50:12,869 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) [2021-11-02 19:50:12,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 19:50:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:50:14,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 4319 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 19:50:14,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:50:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 19:50:14,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 19:50:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 19:50:15,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219857864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 19:50:15,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 19:50:15,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 19:50:15,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859721917] [2021-11-02 19:50:15,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 19:50:15,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:50:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 19:50:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 19:50:15,526 INFO L87 Difference]: Start difference. First operand 33804 states and 47038 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:50:17,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:50:47,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:51:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:51:25,623 INFO L93 Difference]: Finished difference Result 67561 states and 94022 transitions. [2021-11-02 19:51:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 19:51:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 100 [2021-11-02 19:51:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:51:25,667 INFO L225 Difference]: With dead ends: 67561 [2021-11-02 19:51:25,667 INFO L226 Difference]: Without dead ends: 33807 [2021-11-02 19:51:25,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 305.72ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 19:51:25,698 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 7869 mSDsCounter, 0 mSdLazyCounter, 10502 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66005.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.23ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69038.32ms IncrementalHoareTripleChecker+Time [2021-11-02 19:51:25,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10507 Unknown, 0 Unchecked, 60.23ms Time], IncrementalHoareTripleChecker [4 Valid, 10502 Invalid, 1 Unknown, 0 Unchecked, 69038.32ms Time] [2021-11-02 19:51:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33807 states. [2021-11-02 19:51:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33807 to 33807. [2021-11-02 19:51:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33807 states, 33788 states have (on average 1.3922398484669114) internal successors, (47041), 33806 states have internal predecessors, (47041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33807 states to 33807 states and 47041 transitions. [2021-11-02 19:51:26,362 INFO L78 Accepts]: Start accepts. Automaton has 33807 states and 47041 transitions. Word has length 100 [2021-11-02 19:51:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:51:26,362 INFO L470 AbstractCegarLoop]: Abstraction has 33807 states and 47041 transitions. [2021-11-02 19:51:26,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 33807 states and 47041 transitions. [2021-11-02 19:51:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-02 19:51:26,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:51:26,375 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:51:26,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 19:51:26,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 19:51:26,576 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:51:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:51:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1250761518, now seen corresponding path program 2 times [2021-11-02 19:51:26,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:51:26,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249365328] [2021-11-02 19:51:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:51:26,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:51:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:51:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 19:51:27,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:51:27,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249365328] [2021-11-02 19:51:27,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249365328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:51:27,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:51:27,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 19:51:27,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202253912] [2021-11-02 19:51:27,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 19:51:27,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:51:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 19:51:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 19:51:27,240 INFO L87 Difference]: Start difference. First operand 33807 states and 47041 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:29,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:52:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:52:51,294 INFO L93 Difference]: Finished difference Result 124509 states and 173474 transitions. [2021-11-02 19:52:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 19:52:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 103 [2021-11-02 19:52:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:52:51,437 INFO L225 Difference]: With dead ends: 124509 [2021-11-02 19:52:51,437 INFO L226 Difference]: Without dead ends: 90785 [2021-11-02 19:52:51,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 205.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:52:51,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6683 mSDsluCounter, 6781 mSDsCounter, 0 mSdLazyCounter, 11867 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77493.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6683 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.64ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81550.44ms IncrementalHoareTripleChecker+Time [2021-11-02 19:52:51,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6683 Valid, 0 Invalid, 11870 Unknown, 0 Unchecked, 88.64ms Time], IncrementalHoareTripleChecker [2 Valid, 11867 Invalid, 1 Unknown, 0 Unchecked, 81550.44ms Time] [2021-11-02 19:52:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90785 states. [2021-11-02 19:52:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90785 to 33839. [2021-11-02 19:52:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33839 states, 33820 states have (on average 1.3913956238911886) internal successors, (47057), 33838 states have internal predecessors, (47057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:52:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33839 states to 33839 states and 47057 transitions. [2021-11-02 19:52:52,809 INFO L78 Accepts]: Start accepts. Automaton has 33839 states and 47057 transitions. Word has length 103 [2021-11-02 19:52:52,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:52:52,810 INFO L470 AbstractCegarLoop]: Abstraction has 33839 states and 47057 transitions. [2021-11-02 19:52:52,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:52:52,811 INFO L276 IsEmpty]: Start isEmpty. Operand 33839 states and 47057 transitions. [2021-11-02 19:52:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 19:52:52,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:52:52,824 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:52:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 19:52:52,825 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:52:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:52:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 960299480, now seen corresponding path program 1 times [2021-11-02 19:52:52,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:52:52,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676372064] [2021-11-02 19:52:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:52:52,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:52:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:52:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 19:52:53,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:52:53,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676372064] [2021-11-02 19:52:53,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676372064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:52:53,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:52:53,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:52:53,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816282623] [2021-11-02 19:52:53,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:52:53,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:52:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:52:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:52:53,202 INFO L87 Difference]: Start difference. First operand 33839 states and 47057 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:52:55,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:53:43,744 INFO L93 Difference]: Finished difference Result 94183 states and 131229 transitions. [2021-11-02 19:53:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:53:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 [2021-11-02 19:53:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:53:43,832 INFO L225 Difference]: With dead ends: 94183 [2021-11-02 19:53:43,833 INFO L226 Difference]: Without dead ends: 60427 [2021-11-02 19:53:43,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:53:43,878 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2401 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 6894 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45942.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48627.80ms IncrementalHoareTripleChecker+Time [2021-11-02 19:53:43,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 0 Invalid, 6896 Unknown, 0 Unchecked, 32.27ms Time], IncrementalHoareTripleChecker [1 Valid, 6894 Invalid, 1 Unknown, 0 Unchecked, 48627.80ms Time] [2021-11-02 19:53:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60427 states. [2021-11-02 19:53:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60427 to 33871. [2021-11-02 19:53:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33871 states, 33852 states have (on average 1.39099610067352) internal successors, (47088), 33870 states have internal predecessors, (47088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:53:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33871 states to 33871 states and 47088 transitions. [2021-11-02 19:53:45,046 INFO L78 Accepts]: Start accepts. Automaton has 33871 states and 47088 transitions. Word has length 105 [2021-11-02 19:53:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:53:45,046 INFO L470 AbstractCegarLoop]: Abstraction has 33871 states and 47088 transitions. [2021-11-02 19:53:45,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:53:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 33871 states and 47088 transitions. [2021-11-02 19:53:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-02 19:53:45,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:53:45,062 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:53:45,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 19:53:45,063 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-02 19:53:45,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:53:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2075443744, now seen corresponding path program 1 times [2021-11-02 19:53:45,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:53:45,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551723638] [2021-11-02 19:53:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:53:45,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:53:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:53:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 19:53:45,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:53:45,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551723638] [2021-11-02 19:53:45,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551723638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:53:45,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:53:45,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 19:53:45,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837494697] [2021-11-02 19:53:45,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 19:53:45,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:53:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 19:53:45,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 19:53:45,533 INFO L87 Difference]: Start difference. First operand 33871 states and 47088 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:53:47,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:55:00,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15