./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 940a677bfde7dbbc79e036121bd0ec6fd3518c0f58a02d336e5d42fafb098792 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:27:34,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:27:34,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:27:34,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:27:34,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:27:34,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:27:34,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:27:34,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:27:34,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:27:34,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:27:34,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:27:34,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:27:34,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:27:34,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:27:34,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:27:34,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:27:34,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:27:34,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:27:34,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:27:34,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:27:34,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:27:34,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:27:34,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:27:34,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:27:34,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:27:34,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:27:34,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:27:34,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:27:34,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:27:34,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:27:34,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:27:34,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:27:34,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:27:34,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:27:34,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:27:34,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:27:34,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:27:34,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:27:34,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:27:34,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:27:34,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:27:34,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:27:34,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:27:34,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:27:34,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:27:34,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:27:34,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:27:34,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:27:34,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:27:34,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:27:34,840 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:27:34,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:27:34,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:27:34,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:27:34,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:27:34,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:27:34,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:27:34,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:27:34,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:27:34,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:27:34,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:27:34,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:27:34,844 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 940a677bfde7dbbc79e036121bd0ec6fd3518c0f58a02d336e5d42fafb098792 [2021-12-06 18:27:35,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:27:35,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:27:35,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:27:35,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:27:35,035 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:27:35,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/systemc/transmitter.11.cil.c [2021-12-06 18:27:35,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/data/a6bc95cbe/30e0261a8bf142ee8c001acebc47a097/FLAG83f6b3b85 [2021-12-06 18:27:35,466 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:27:35,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/sv-benchmarks/c/systemc/transmitter.11.cil.c [2021-12-06 18:27:35,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/data/a6bc95cbe/30e0261a8bf142ee8c001acebc47a097/FLAG83f6b3b85 [2021-12-06 18:27:35,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/data/a6bc95cbe/30e0261a8bf142ee8c001acebc47a097 [2021-12-06 18:27:35,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:27:35,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:27:35,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:27:35,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:27:35,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:27:35,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e8f461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35, skipping insertion in model container [2021-12-06 18:27:35,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:27:35,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:27:35,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/sv-benchmarks/c/systemc/transmitter.11.cil.c[706,719] [2021-12-06 18:27:35,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:27:35,759 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:27:35,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/sv-benchmarks/c/systemc/transmitter.11.cil.c[706,719] [2021-12-06 18:27:35,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:27:35,840 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:27:35,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35 WrapperNode [2021-12-06 18:27:35,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:27:35,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:27:35,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:27:35,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:27:35,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,899 INFO L137 Inliner]: procedures = 50, calls = 63, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 777 [2021-12-06 18:27:35,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:27:35,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:27:35,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:27:35,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:27:35,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:27:35,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:27:35,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:27:35,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:27:35,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (1/1) ... [2021-12-06 18:27:35,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:27:35,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:27:35,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:27:35,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27cf72d3-13b7-40b4-95ee-f4f95053a10e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:27:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:27:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 18:27:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 18:27:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 18:27:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 18:27:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 18:27:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 18:27:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 18:27:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 18:27:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 18:27:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 18:27:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 18:27:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 18:27:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:27:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:27:36,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:27:36,091 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:27:36,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:27:36,539 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:27:36,550 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:27:36,550 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-06 18:27:36,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:27:36 BoogieIcfgContainer [2021-12-06 18:27:36,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:27:36,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:27:36,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:27:36,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:27:36,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:27:35" (1/3) ... [2021-12-06 18:27:36,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ca0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:27:36, skipping insertion in model container [2021-12-06 18:27:36,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:27:35" (2/3) ... [2021-12-06 18:27:36,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ca0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:27:36, skipping insertion in model container [2021-12-06 18:27:36,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:27:36" (3/3) ... [2021-12-06 18:27:36,560 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.11.cil.c [2021-12-06 18:27:36,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:27:36,565 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:27:36,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:27:36,606 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 [2021-12-06 18:27:36,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:27:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 321 states have (on average 1.6604361370716512) internal successors, (533), 323 states have internal predecessors, (533), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 18:27:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:36,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:36,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:36,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash 809837522, now seen corresponding path program 1 times [2021-12-06 18:27:36,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805107967] [2021-12-06 18:27:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:36,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:36,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805107967] [2021-12-06 18:27:36,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805107967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:36,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:36,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:27:36,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485606533] [2021-12-06 18:27:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:36,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:27:36,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:27:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:27:37,013 INFO L87 Difference]: Start difference. First operand has 353 states, 321 states have (on average 1.6604361370716512) internal successors, (533), 323 states have internal predecessors, (533), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:38,112 INFO L93 Difference]: Finished difference Result 824 states and 1366 transitions. [2021-12-06 18:27:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:27:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:38,127 INFO L225 Difference]: With dead ends: 824 [2021-12-06 18:27:38,127 INFO L226 Difference]: Without dead ends: 477 [2021-12-06 18:27:38,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:38,134 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 941 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:38,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 991 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:27:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-06 18:27:38,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 348. [2021-12-06 18:27:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 317 states have (on average 1.5646687697160884) internal successors, (496), 318 states have internal predecessors, (496), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 18:27:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 544 transitions. [2021-12-06 18:27:38,203 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 544 transitions. Word has length 175 [2021-12-06 18:27:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:38,204 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 544 transitions. [2021-12-06 18:27:38,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 544 transitions. [2021-12-06 18:27:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:38,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:38,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:38,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:27:38,209 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1760521452, now seen corresponding path program 1 times [2021-12-06 18:27:38,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:38,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915823727] [2021-12-06 18:27:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:38,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:38,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:38,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:38,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915823727] [2021-12-06 18:27:38,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915823727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:38,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:38,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:27:38,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478153068] [2021-12-06 18:27:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:38,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:27:38,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:27:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:27:38,390 INFO L87 Difference]: Start difference. First operand 348 states and 544 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:39,569 INFO L93 Difference]: Finished difference Result 805 states and 1277 transitions. [2021-12-06 18:27:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:27:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:39,575 INFO L225 Difference]: With dead ends: 805 [2021-12-06 18:27:39,575 INFO L226 Difference]: Without dead ends: 476 [2021-12-06 18:27:39,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:27:39,578 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 924 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:39,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1174 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 18:27:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-06 18:27:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 348. [2021-12-06 18:27:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 317 states have (on average 1.5615141955835963) internal successors, (495), 318 states have internal predecessors, (495), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 18:27:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 543 transitions. [2021-12-06 18:27:39,612 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 543 transitions. Word has length 175 [2021-12-06 18:27:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:39,613 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 543 transitions. [2021-12-06 18:27:39,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 4 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 543 transitions. [2021-12-06 18:27:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:39,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:39,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:39,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:27:39,616 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1923176786, now seen corresponding path program 1 times [2021-12-06 18:27:39,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820522853] [2021-12-06 18:27:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:39,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:39,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:39,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:39,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820522853] [2021-12-06 18:27:39,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820522853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:39,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:39,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:27:39,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228616654] [2021-12-06 18:27:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:39,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:27:39,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:27:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:27:39,755 INFO L87 Difference]: Start difference. First operand 348 states and 543 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:40,939 INFO L93 Difference]: Finished difference Result 827 states and 1318 transitions. [2021-12-06 18:27:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:27:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:40,943 INFO L225 Difference]: With dead ends: 827 [2021-12-06 18:27:40,943 INFO L226 Difference]: Without dead ends: 498 [2021-12-06 18:27:40,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:27:40,945 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1006 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:40,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1458 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 18:27:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-12-06 18:27:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 348. [2021-12-06 18:27:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 317 states have (on average 1.5583596214511042) internal successors, (494), 318 states have internal predecessors, (494), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 18:27:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 542 transitions. [2021-12-06 18:27:40,969 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 542 transitions. Word has length 175 [2021-12-06 18:27:40,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:40,969 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 542 transitions. [2021-12-06 18:27:40,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 542 transitions. [2021-12-06 18:27:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:40,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:40,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:40,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:27:40,972 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:40,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash 517985108, now seen corresponding path program 1 times [2021-12-06 18:27:40,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:40,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648405549] [2021-12-06 18:27:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:40,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:41,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:41,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648405549] [2021-12-06 18:27:41,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648405549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:41,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:41,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:27:41,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781339159] [2021-12-06 18:27:41,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:41,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:27:41,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:27:41,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:27:41,091 INFO L87 Difference]: Start difference. First operand 348 states and 542 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:42,121 INFO L93 Difference]: Finished difference Result 803 states and 1271 transitions. [2021-12-06 18:27:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:27:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:42,124 INFO L225 Difference]: With dead ends: 803 [2021-12-06 18:27:42,124 INFO L226 Difference]: Without dead ends: 474 [2021-12-06 18:27:42,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:27:42,126 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 1002 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:42,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1409 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:27:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-12-06 18:27:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 348. [2021-12-06 18:27:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 317 states have (on average 1.5488958990536277) internal successors, (491), 318 states have internal predecessors, (491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 18:27:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 539 transitions. [2021-12-06 18:27:42,149 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 539 transitions. Word has length 175 [2021-12-06 18:27:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:42,150 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 539 transitions. [2021-12-06 18:27:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 539 transitions. [2021-12-06 18:27:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:42,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:42,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:42,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:27:42,152 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:42,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:42,153 INFO L85 PathProgramCache]: Analyzing trace with hash 383732884, now seen corresponding path program 1 times [2021-12-06 18:27:42,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:42,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582680830] [2021-12-06 18:27:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:42,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:42,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:42,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:42,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:42,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582680830] [2021-12-06 18:27:42,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582680830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:42,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:42,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:42,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044201992] [2021-12-06 18:27:42,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:42,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:42,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:42,286 INFO L87 Difference]: Start difference. First operand 348 states and 539 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:44,288 INFO L93 Difference]: Finished difference Result 1296 states and 2054 transitions. [2021-12-06 18:27:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:27:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:44,293 INFO L225 Difference]: With dead ends: 1296 [2021-12-06 18:27:44,293 INFO L226 Difference]: Without dead ends: 967 [2021-12-06 18:27:44,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:27:44,295 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 1817 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2566 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:44,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 2962 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2566 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:27:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-12-06 18:27:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 693. [2021-12-06 18:27:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 635 states have (on average 1.5590551181102361) internal successors, (990), 637 states have internal predecessors, (990), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (47), 45 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-06 18:27:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1081 transitions. [2021-12-06 18:27:44,348 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1081 transitions. Word has length 175 [2021-12-06 18:27:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:44,348 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 1081 transitions. [2021-12-06 18:27:44,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1081 transitions. [2021-12-06 18:27:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:44,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:44,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:44,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:27:44,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1830313750, now seen corresponding path program 1 times [2021-12-06 18:27:44,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:44,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285481585] [2021-12-06 18:27:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:44,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:44,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:44,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285481585] [2021-12-06 18:27:44,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285481585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:44,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:44,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:44,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158017964] [2021-12-06 18:27:44,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:44,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:44,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:44,467 INFO L87 Difference]: Start difference. First operand 693 states and 1081 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:46,458 INFO L93 Difference]: Finished difference Result 2639 states and 4213 transitions. [2021-12-06 18:27:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:27:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:46,471 INFO L225 Difference]: With dead ends: 2639 [2021-12-06 18:27:46,471 INFO L226 Difference]: Without dead ends: 1965 [2021-12-06 18:27:46,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:27:46,475 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 1813 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:46,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 2952 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 18:27:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-12-06 18:27:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1422. [2021-12-06 18:27:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1308 states have (on average 1.5741590214067278) internal successors, (2059), 1314 states have internal predecessors, (2059), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (99), 87 states have call predecessors, (99), 84 states have call successors, (99) [2021-12-06 18:27:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2242 transitions. [2021-12-06 18:27:46,566 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2242 transitions. Word has length 175 [2021-12-06 18:27:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:46,567 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 2242 transitions. [2021-12-06 18:27:46,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2242 transitions. [2021-12-06 18:27:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:46,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:46,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:46,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:27:46,570 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 907146324, now seen corresponding path program 1 times [2021-12-06 18:27:46,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:46,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116426587] [2021-12-06 18:27:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:46,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:46,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116426587] [2021-12-06 18:27:46,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116426587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:46,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:46,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:27:46,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820250721] [2021-12-06 18:27:46,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:46,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:27:46,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:46,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:27:46,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:27:46,682 INFO L87 Difference]: Start difference. First operand 1422 states and 2242 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:47,771 INFO L93 Difference]: Finished difference Result 3496 states and 5630 transitions. [2021-12-06 18:27:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:27:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:47,780 INFO L225 Difference]: With dead ends: 3496 [2021-12-06 18:27:47,780 INFO L226 Difference]: Without dead ends: 2093 [2021-12-06 18:27:47,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:27:47,784 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1002 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:47,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1436 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:27:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2021-12-06 18:27:47,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1422. [2021-12-06 18:27:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1308 states have (on average 1.5711009174311927) internal successors, (2055), 1314 states have internal predecessors, (2055), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (99), 87 states have call predecessors, (99), 84 states have call successors, (99) [2021-12-06 18:27:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2238 transitions. [2021-12-06 18:27:47,883 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2238 transitions. Word has length 175 [2021-12-06 18:27:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 2238 transitions. [2021-12-06 18:27:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2238 transitions. [2021-12-06 18:27:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:47,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:47,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:47,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:27:47,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:47,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1293008726, now seen corresponding path program 1 times [2021-12-06 18:27:47,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:47,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282854588] [2021-12-06 18:27:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:47,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:48,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:48,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282854588] [2021-12-06 18:27:48,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282854588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:48,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:48,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:27:48,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593216567] [2021-12-06 18:27:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:48,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:27:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:27:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:27:48,003 INFO L87 Difference]: Start difference. First operand 1422 states and 2238 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:49,136 INFO L93 Difference]: Finished difference Result 3478 states and 5583 transitions. [2021-12-06 18:27:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:27:49,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:49,145 INFO L225 Difference]: With dead ends: 3478 [2021-12-06 18:27:49,145 INFO L226 Difference]: Without dead ends: 2075 [2021-12-06 18:27:49,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:27:49,148 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1061 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:49,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 1395 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:27:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2021-12-06 18:27:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1422. [2021-12-06 18:27:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1308 states have (on average 1.5680428134556574) internal successors, (2051), 1314 states have internal predecessors, (2051), 84 states have call successors, (84), 24 states have call predecessors, (84), 29 states have return successors, (99), 87 states have call predecessors, (99), 84 states have call successors, (99) [2021-12-06 18:27:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2234 transitions. [2021-12-06 18:27:49,248 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2234 transitions. Word has length 175 [2021-12-06 18:27:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:49,248 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 2234 transitions. [2021-12-06 18:27:49,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2234 transitions. [2021-12-06 18:27:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:49,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:49,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:49,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:27:49,251 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1070832936, now seen corresponding path program 1 times [2021-12-06 18:27:49,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616364365] [2021-12-06 18:27:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:49,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:49,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:49,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616364365] [2021-12-06 18:27:49,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616364365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:49,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:49,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:49,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919535399] [2021-12-06 18:27:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:49,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:49,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:49,361 INFO L87 Difference]: Start difference. First operand 1422 states and 2234 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:51,717 INFO L93 Difference]: Finished difference Result 5434 states and 8712 transitions. [2021-12-06 18:27:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:27:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:51,732 INFO L225 Difference]: With dead ends: 5434 [2021-12-06 18:27:51,733 INFO L226 Difference]: Without dead ends: 4031 [2021-12-06 18:27:51,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:27:51,736 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 1512 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:51,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 3269 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2763 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 18:27:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-12-06 18:27:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 2964. [2021-12-06 18:27:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2732 states have (on average 1.584553440702782) internal successors, (4329), 2752 states have internal predecessors, (4329), 164 states have call successors, (164), 48 states have call predecessors, (164), 67 states have return successors, (227), 171 states have call predecessors, (227), 164 states have call successors, (227) [2021-12-06 18:27:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4720 transitions. [2021-12-06 18:27:51,913 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4720 transitions. Word has length 175 [2021-12-06 18:27:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:51,913 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 4720 transitions. [2021-12-06 18:27:51,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4720 transitions. [2021-12-06 18:27:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:51,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:51,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:51,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:27:51,917 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1900955414, now seen corresponding path program 1 times [2021-12-06 18:27:51,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:51,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167053807] [2021-12-06 18:27:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:51,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:52,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:52,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167053807] [2021-12-06 18:27:52,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167053807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:52,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:52,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:52,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489394059] [2021-12-06 18:27:52,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:52,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:52,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:52,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:52,024 INFO L87 Difference]: Start difference. First operand 2964 states and 4720 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:54,620 INFO L93 Difference]: Finished difference Result 11377 states and 18490 transitions. [2021-12-06 18:27:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:27:54,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:54,653 INFO L225 Difference]: With dead ends: 11377 [2021-12-06 18:27:54,653 INFO L226 Difference]: Without dead ends: 8432 [2021-12-06 18:27:54,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:27:54,661 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 1508 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:54,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 3265 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 18:27:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8432 states. [2021-12-06 18:27:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8432 to 6309. [2021-12-06 18:27:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6309 states, 5823 states have (on average 1.6055297956379873) internal successors, (9349), 5889 states have internal predecessors, (9349), 324 states have call successors, (324), 96 states have call predecessors, (324), 161 states have return successors, (579), 339 states have call predecessors, (579), 324 states have call successors, (579) [2021-12-06 18:27:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6309 states to 6309 states and 10252 transitions. [2021-12-06 18:27:55,042 INFO L78 Accepts]: Start accepts. Automaton has 6309 states and 10252 transitions. Word has length 175 [2021-12-06 18:27:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:55,042 INFO L470 AbstractCegarLoop]: Abstraction has 6309 states and 10252 transitions. [2021-12-06 18:27:55,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6309 states and 10252 transitions. [2021-12-06 18:27:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:55,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:55,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:55,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:27:55,049 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash -497032424, now seen corresponding path program 1 times [2021-12-06 18:27:55,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:55,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577799566] [2021-12-06 18:27:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:55,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:55,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:55,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577799566] [2021-12-06 18:27:55,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577799566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:55,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:55,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:55,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113674598] [2021-12-06 18:27:55,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:55,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:55,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:55,166 INFO L87 Difference]: Start difference. First operand 6309 states and 10252 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:27:58,135 INFO L93 Difference]: Finished difference Result 24245 states and 40254 transitions. [2021-12-06 18:27:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:27:58,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:27:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:27:58,191 INFO L225 Difference]: With dead ends: 24245 [2021-12-06 18:27:58,191 INFO L226 Difference]: Without dead ends: 17955 [2021-12-06 18:27:58,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:27:58,206 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 1504 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:27:58,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 3261 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 18:27:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17955 states. [2021-12-06 18:27:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17955 to 13728. [2021-12-06 18:27:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13728 states, 12680 states have (on average 1.6306782334384857) internal successors, (20677), 12892 states have internal predecessors, (20677), 644 states have call successors, (644), 192 states have call predecessors, (644), 403 states have return successors, (1667), 675 states have call predecessors, (1667), 644 states have call successors, (1667) [2021-12-06 18:27:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13728 states to 13728 states and 22988 transitions. [2021-12-06 18:27:58,970 INFO L78 Accepts]: Start accepts. Automaton has 13728 states and 22988 transitions. Word has length 175 [2021-12-06 18:27:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:58,970 INFO L470 AbstractCegarLoop]: Abstraction has 13728 states and 22988 transitions. [2021-12-06 18:27:58,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:27:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 13728 states and 22988 transitions. [2021-12-06 18:27:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:27:58,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:58,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:58,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:27:58,980 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash -158744874, now seen corresponding path program 1 times [2021-12-06 18:27:58,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:58,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621144703] [2021-12-06 18:27:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:58,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:27:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:59,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:27:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:27:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:27:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:27:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:27:59,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:59,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621144703] [2021-12-06 18:27:59,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621144703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:59,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:59,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:59,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940426638] [2021-12-06 18:27:59,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:59,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:59,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:59,085 INFO L87 Difference]: Start difference. First operand 13728 states and 22988 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:28:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:02,804 INFO L93 Difference]: Finished difference Result 52719 states and 90490 transitions. [2021-12-06 18:28:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:28:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:28:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:02,901 INFO L225 Difference]: With dead ends: 52719 [2021-12-06 18:28:02,901 INFO L226 Difference]: Without dead ends: 39010 [2021-12-06 18:28:02,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:28:02,938 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 1787 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:02,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1805 Valid, 2918 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 18:28:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39010 states. [2021-12-06 18:28:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39010 to 30591. [2021-12-06 18:28:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30591 states, 28257 states have (on average 1.6590933220087059) internal successors, (46881), 28923 states have internal predecessors, (46881), 1284 states have call successors, (1284), 384 states have call predecessors, (1284), 1049 states have return successors, (5379), 1347 states have call predecessors, (5379), 1284 states have call successors, (5379) [2021-12-06 18:28:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30591 states to 30591 states and 53544 transitions. [2021-12-06 18:28:04,536 INFO L78 Accepts]: Start accepts. Automaton has 30591 states and 53544 transitions. Word has length 175 [2021-12-06 18:28:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:04,537 INFO L470 AbstractCegarLoop]: Abstraction has 30591 states and 53544 transitions. [2021-12-06 18:28:04,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:28:04,538 INFO L276 IsEmpty]: Start isEmpty. Operand 30591 states and 53544 transitions. [2021-12-06 18:28:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:28:04,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:04,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:28:04,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 18:28:04,560 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:04,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash 267809624, now seen corresponding path program 1 times [2021-12-06 18:28:04,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:04,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201812424] [2021-12-06 18:28:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:04,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:28:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:28:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:28:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:28:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:28:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:04,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:04,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201812424] [2021-12-06 18:28:04,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201812424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:28:04,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:28:04,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:28:04,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864407794] [2021-12-06 18:28:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:28:04,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:28:04,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:04,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:28:04,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:28:04,677 INFO L87 Difference]: Start difference. First operand 30591 states and 53544 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:28:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:12,565 INFO L93 Difference]: Finished difference Result 126977 states and 226760 transitions. [2021-12-06 18:28:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:28:12,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:28:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:12,842 INFO L225 Difference]: With dead ends: 126977 [2021-12-06 18:28:12,842 INFO L226 Difference]: Without dead ends: 96405 [2021-12-06 18:28:12,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:28:12,913 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 1887 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 2950 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:12,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1904 Valid, 3072 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2950 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 18:28:12,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96405 states. [2021-12-06 18:28:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96405 to 69650. [2021-12-06 18:28:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69650 states, 64322 states have (on average 1.6912564907807592) internal successors, (108785), 66382 states have internal predecessors, (108785), 2500 states have call successors, (2500), 768 states have call predecessors, (2500), 2827 states have return successors, (18883), 2627 states have call predecessors, (18883), 2500 states have call successors, (18883) [2021-12-06 18:28:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69650 states to 69650 states and 130168 transitions. [2021-12-06 18:28:16,409 INFO L78 Accepts]: Start accepts. Automaton has 69650 states and 130168 transitions. Word has length 175 [2021-12-06 18:28:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:16,410 INFO L470 AbstractCegarLoop]: Abstraction has 69650 states and 130168 transitions. [2021-12-06 18:28:16,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:28:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 69650 states and 130168 transitions. [2021-12-06 18:28:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:28:16,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:16,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:28:16,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:28:16,443 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:16,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash -272619882, now seen corresponding path program 1 times [2021-12-06 18:28:16,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:16,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463765317] [2021-12-06 18:28:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:16,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:28:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:28:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:28:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:28:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:28:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:16,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:16,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463765317] [2021-12-06 18:28:16,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463765317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:28:16,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:28:16,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:28:16,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234692501] [2021-12-06 18:28:16,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:28:16,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:28:16,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:16,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:28:16,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:28:16,543 INFO L87 Difference]: Start difference. First operand 69650 states and 130168 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:28:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:31,037 INFO L93 Difference]: Finished difference Result 284039 states and 546940 transitions. [2021-12-06 18:28:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:28:31,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:28:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:31,800 INFO L225 Difference]: With dead ends: 284039 [2021-12-06 18:28:31,800 INFO L226 Difference]: Without dead ends: 214408 [2021-12-06 18:28:32,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:28:32,035 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 1864 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:32,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1894 Valid, 3233 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 18:28:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214408 states. [2021-12-06 18:28:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214408 to 162949. [2021-12-06 18:28:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162949 states, 150239 states have (on average 1.7219829737950865) internal successors, (258709), 156545 states have internal predecessors, (258709), 4868 states have call successors, (4868), 1536 states have call predecessors, (4868), 7841 states have return successors, (70403), 5123 states have call predecessors, (70403), 4868 states have call successors, (70403) [2021-12-06 18:28:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162949 states to 162949 states and 333980 transitions. [2021-12-06 18:28:41,286 INFO L78 Accepts]: Start accepts. Automaton has 162949 states and 333980 transitions. Word has length 175 [2021-12-06 18:28:41,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:41,287 INFO L470 AbstractCegarLoop]: Abstraction has 162949 states and 333980 transitions. [2021-12-06 18:28:41,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:28:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 162949 states and 333980 transitions. [2021-12-06 18:28:41,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:28:41,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:41,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:28:41,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:28:41,357 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:41,358 INFO L85 PathProgramCache]: Analyzing trace with hash -428600424, now seen corresponding path program 1 times [2021-12-06 18:28:41,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:41,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587753708] [2021-12-06 18:28:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:41,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:28:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:28:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:28:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:28:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:41,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:28:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:41,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:41,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587753708] [2021-12-06 18:28:41,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587753708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:28:41,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:28:41,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:28:41,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056354660] [2021-12-06 18:28:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:28:41,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:28:41,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:28:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:28:41,473 INFO L87 Difference]: Start difference. First operand 162949 states and 333980 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:29:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:29:09,039 INFO L93 Difference]: Finished difference Result 642320 states and 1383686 transitions. [2021-12-06 18:29:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:29:09,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:29:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:29:11,143 INFO L225 Difference]: With dead ends: 642320 [2021-12-06 18:29:11,144 INFO L226 Difference]: Without dead ends: 479390 [2021-12-06 18:29:11,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:29:11,688 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1661 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:29:11,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 2164 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 18:29:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479390 states. [2021-12-06 18:29:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479390 to 384155. [2021-12-06 18:29:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384155 states, 352435 states have (on average 1.7451019336899003) internal successors, (615035), 371607 states have internal predecessors, (615035), 9476 states have call successors, (9476), 3072 states have call predecessors, (9476), 22243 states have return successors, (271619), 9987 states have call predecessors, (271619), 9476 states have call successors, (271619) [2021-12-06 18:29:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384155 states to 384155 states and 896130 transitions. [2021-12-06 18:29:36,973 INFO L78 Accepts]: Start accepts. Automaton has 384155 states and 896130 transitions. Word has length 175 [2021-12-06 18:29:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:29:36,973 INFO L470 AbstractCegarLoop]: Abstraction has 384155 states and 896130 transitions. [2021-12-06 18:29:36,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:29:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 384155 states and 896130 transitions. [2021-12-06 18:29:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:29:37,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:29:37,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:29:37,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:29:37,220 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:29:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:29:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2078497050, now seen corresponding path program 1 times [2021-12-06 18:29:37,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:29:37,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268638712] [2021-12-06 18:29:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:29:37,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:29:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:29:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:29:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:29:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:29:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:29:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:29:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:29:37,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:29:37,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268638712] [2021-12-06 18:29:37,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268638712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:29:37,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:29:37,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:29:37,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428558263] [2021-12-06 18:29:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:29:37,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:29:37,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:29:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:29:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:29:37,323 INFO L87 Difference]: Start difference. First operand 384155 states and 896130 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:30:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:30:03,739 INFO L93 Difference]: Finished difference Result 989755 states and 2414703 transitions. [2021-12-06 18:30:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:30:03,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:30:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:30:06,673 INFO L225 Difference]: With dead ends: 989755 [2021-12-06 18:30:06,673 INFO L226 Difference]: Without dead ends: 605619 [2021-12-06 18:30:07,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:30:07,801 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1003 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:30:07,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1399 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 18:30:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605619 states. [2021-12-06 18:30:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605619 to 384155. [2021-12-06 18:30:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384155 states, 352435 states have (on average 1.74364918353739) internal successors, (614523), 371607 states have internal predecessors, (614523), 9476 states have call successors, (9476), 3072 states have call predecessors, (9476), 22243 states have return successors, (271619), 9987 states have call predecessors, (271619), 9476 states have call successors, (271619) [2021-12-06 18:30:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384155 states to 384155 states and 895618 transitions. [2021-12-06 18:30:51,206 INFO L78 Accepts]: Start accepts. Automaton has 384155 states and 895618 transitions. Word has length 175 [2021-12-06 18:30:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:30:51,207 INFO L470 AbstractCegarLoop]: Abstraction has 384155 states and 895618 transitions. [2021-12-06 18:30:51,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:30:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 384155 states and 895618 transitions. [2021-12-06 18:30:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:30:51,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:30:51,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:51,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:30:51,319 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:30:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash -57386152, now seen corresponding path program 1 times [2021-12-06 18:30:51,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075738740] [2021-12-06 18:30:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:51,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:30:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:30:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:30:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:30:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:30:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:30:51,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:51,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075738740] [2021-12-06 18:30:51,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075738740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:51,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:51,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:30:51,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092566401] [2021-12-06 18:30:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:51,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:30:51,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:30:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:30:51,428 INFO L87 Difference]: Start difference. First operand 384155 states and 895618 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:31:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:50,110 INFO L93 Difference]: Finished difference Result 1463774 states and 3707146 transitions. [2021-12-06 18:31:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:31:50,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 175 [2021-12-06 18:31:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:56,359 INFO L225 Difference]: With dead ends: 1463774 [2021-12-06 18:31:56,359 INFO L226 Difference]: Without dead ends: 1079638 [2021-12-06 18:31:58,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:31:58,134 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1528 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:58,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 3307 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 18:31:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079638 states. [2021-12-06 18:33:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079638 to 904531. [2021-12-06 18:33:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904531 states, 821925 states have (on average 1.7568427776256959) internal successors, (1443993), 879951 states have internal predecessors, (1443993), 18436 states have call successors, (18436), 6144 states have call predecessors, (18436), 64169 states have return successors, (1067011), 19459 states have call predecessors, (1067011), 18436 states have call successors, (1067011) [2021-12-06 18:33:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904531 states to 904531 states and 2529440 transitions. [2021-12-06 18:33:18,985 INFO L78 Accepts]: Start accepts. Automaton has 904531 states and 2529440 transitions. Word has length 175 [2021-12-06 18:33:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:33:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 904531 states and 2529440 transitions. [2021-12-06 18:33:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:33:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 904531 states and 2529440 transitions. [2021-12-06 18:33:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 18:33:19,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:33:19,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:33:19,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:33:19,235 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:33:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:33:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash 12261722, now seen corresponding path program 1 times [2021-12-06 18:33:19,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:33:19,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008845629] [2021-12-06 18:33:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:33:19,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:33:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 18:33:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 18:33:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 18:33:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 18:33:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 18:33:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:33:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:33:19,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:33:19,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008845629] [2021-12-06 18:33:19,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008845629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:33:19,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:33:19,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:33:19,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507867236] [2021-12-06 18:33:19,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:33:19,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:33:19,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:33:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:33:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:33:19,335 INFO L87 Difference]: Start difference. First operand 904531 states and 2529440 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)