./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ --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 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:43:47,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:43:47,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:43:47,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:43:47,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:43:47,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:43:47,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:43:47,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:43:47,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:43:47,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:43:47,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:43:47,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:43:47,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:43:47,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:43:47,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:43:47,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:43:47,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:43:47,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:43:47,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:43:47,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:43:47,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:43:47,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:43:47,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:43:47,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:43:47,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:43:47,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:43:47,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:43:47,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:43:47,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:43:47,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:43:47,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:43:47,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:43:47,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:43:47,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:43:47,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:43:47,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:43:47,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:43:47,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:43:47,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:43:47,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:43:47,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:43:47,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:43:47,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:43:47,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:43:47,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:43:47,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:43:47,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:43:47,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:43:47,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:43:47,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:43:47,819 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:43:47,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:43:47,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:43:47,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:43:47,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:43:47,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:43:47,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:43:47,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:43:47,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:43:47,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:43:47,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:43:47,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:43:47,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:43:47,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:43:47,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:43:47,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:43:47,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:47,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:43:47,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:43:47,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:43:47,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:43:47,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:43:47,828 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:43:47,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:43:47,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:43:47,829 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_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e [2022-10-17 10:43:48,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:43:48,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:43:48,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:43:48,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:43:48,201 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:43:48,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-10-17 10:43:48,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/data/407314466/eb2f32bbacc942c2a3ff0a457039aad0/FLAG181a213a2 [2022-10-17 10:43:48,881 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:43:48,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-10-17 10:43:48,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/data/407314466/eb2f32bbacc942c2a3ff0a457039aad0/FLAG181a213a2 [2022-10-17 10:43:49,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/data/407314466/eb2f32bbacc942c2a3ff0a457039aad0 [2022-10-17 10:43:49,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:43:49,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:43:49,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:49,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:43:49,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:43:49,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a4ef78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49, skipping insertion in model container [2022-10-17 10:43:49,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:43:49,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:49,420 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_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2022-10-17 10:43:49,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:49,572 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:49,586 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_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2022-10-17 10:43:49,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:49,729 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:49,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49 WrapperNode [2022-10-17 10:43:49,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:49,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:49,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:49,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:49,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,825 INFO L138 Inliner]: procedures = 46, calls = 58, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 679 [2022-10-17 10:43:49,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:49,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:49,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:49,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:49,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:49,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:49,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:49,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:49,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (1/1) ... [2022-10-17 10:43:49,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:49,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:49,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:50,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce465d8-82e5-4c8b-8cf8-ce5931f19e93/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:43:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:43:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:43:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:43:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:43:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:43:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:43:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:43:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:43:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:43:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:43:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:43:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:50,185 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:50,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:51,110 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:51,131 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:51,131 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-10-17 10:43:51,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:51 BoogieIcfgContainer [2022-10-17 10:43:51,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:51,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:51,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:51,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:51,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:43:49" (1/3) ... [2022-10-17 10:43:51,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550ecbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:51, skipping insertion in model container [2022-10-17 10:43:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:49" (2/3) ... [2022-10-17 10:43:51,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550ecbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:51, skipping insertion in model container [2022-10-17 10:43:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:51" (3/3) ... [2022-10-17 10:43:51,147 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2022-10-17 10:43:51,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:51,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:43:51,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:51,269 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@634fe622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:51,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:43:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:43:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:43:51,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:51,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:51,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1628036766, now seen corresponding path program 1 times [2022-10-17 10:43:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626577312] [2022-10-17 10:43:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:51,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:51,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:43:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:43:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:43:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:43:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:52,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:43:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:52,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626577312] [2022-10-17 10:43:52,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626577312] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:52,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:52,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:43:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531406378] [2022-10-17 10:43:52,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:52,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:43:52,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:43:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:43:52,128 INFO L87 Difference]: Start difference. First operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-10-17 10:43:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:53,905 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2022-10-17 10:43:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:43:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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 144 [2022-10-17 10:43:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:53,924 INFO L225 Difference]: With dead ends: 710 [2022-10-17 10:43:53,924 INFO L226 Difference]: Without dead ends: 411 [2022-10-17 10:43:53,931 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:43:53,934 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 803 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:53,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 841 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:43:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-10-17 10:43:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 302. [2022-10-17 10:43:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 272 states have (on average 1.5625) internal successors, (425), 273 states have internal predecessors, (425), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:43:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 471 transitions. [2022-10-17 10:43:54,061 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 471 transitions. Word has length 144 [2022-10-17 10:43:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:54,062 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 471 transitions. [2022-10-17 10:43:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-10-17 10:43:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 471 transitions. [2022-10-17 10:43:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:43:54,079 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:54,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:54,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:43:54,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2122057956, now seen corresponding path program 1 times [2022-10-17 10:43:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:54,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462043247] [2022-10-17 10:43:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:54,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:43:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:43:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:43:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:43:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:43:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:54,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:54,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462043247] [2022-10-17 10:43:54,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462043247] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:54,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:54,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:43:54,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329261865] [2022-10-17 10:43:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:43:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:43:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:43:54,496 INFO L87 Difference]: Start difference. First operand 302 states and 471 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-10-17 10:43:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:57,258 INFO L93 Difference]: Finished difference Result 1102 states and 1758 transitions. [2022-10-17 10:43:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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 144 [2022-10-17 10:43:57,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:57,270 INFO L225 Difference]: With dead ends: 1102 [2022-10-17 10:43:57,271 INFO L226 Difference]: Without dead ends: 817 [2022-10-17 10:43:57,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:43:57,281 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1208 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:57,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1313 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:43:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-10-17 10:43:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 600. [2022-10-17 10:43:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 545 states have (on average 1.5743119266055046) internal successors, (858), 547 states have internal predecessors, (858), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-10-17 10:43:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 943 transitions. [2022-10-17 10:43:57,411 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 943 transitions. Word has length 144 [2022-10-17 10:43:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:57,415 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 943 transitions. [2022-10-17 10:43:57,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-10-17 10:43:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 943 transitions. [2022-10-17 10:43:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:43:57,418 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:57,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:57,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:43:57,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:57,421 INFO L85 PathProgramCache]: Analyzing trace with hash -379054432, now seen corresponding path program 1 times [2022-10-17 10:43:57,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:57,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119321386] [2022-10-17 10:43:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:57,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:43:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:43:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:43:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:43:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:57,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:43:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:57,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:57,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119321386] [2022-10-17 10:43:57,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119321386] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:57,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:57,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:43:57,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978307754] [2022-10-17 10:43:57,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:57,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:43:57,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:43:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:43:57,846 INFO L87 Difference]: Start difference. First operand 600 states and 943 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:01,253 INFO L93 Difference]: Finished difference Result 1820 states and 2905 transitions. [2022-10-17 10:44:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:44:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-10-17 10:44:01,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:01,271 INFO L225 Difference]: With dead ends: 1820 [2022-10-17 10:44:01,272 INFO L226 Difference]: Without dead ends: 1237 [2022-10-17 10:44:01,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:44:01,278 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1225 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:01,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2281 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-10-17 10:44:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-10-17 10:44:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 877. [2022-10-17 10:44:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 797 states have (on average 1.5671267252195733) internal successors, (1249), 800 states have internal predecessors, (1249), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-10-17 10:44:01,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1372 transitions. [2022-10-17 10:44:01,397 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1372 transitions. Word has length 144 [2022-10-17 10:44:01,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:01,398 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1372 transitions. [2022-10-17 10:44:01,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:01,398 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1372 transitions. [2022-10-17 10:44:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:44:01,401 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:01,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:44:01,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:01,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash 567983454, now seen corresponding path program 1 times [2022-10-17 10:44:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:01,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33057640] [2022-10-17 10:44:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:01,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:44:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:44:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:44:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:44:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:44:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:01,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33057640] [2022-10-17 10:44:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33057640] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:01,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:01,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285042866] [2022-10-17 10:44:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:01,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:01,672 INFO L87 Difference]: Start difference. First operand 877 states and 1372 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:04,798 INFO L93 Difference]: Finished difference Result 2878 states and 4582 transitions. [2022-10-17 10:44:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:44:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-10-17 10:44:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:04,814 INFO L225 Difference]: With dead ends: 2878 [2022-10-17 10:44:04,814 INFO L226 Difference]: Without dead ends: 2018 [2022-10-17 10:44:04,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:44:04,819 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 1222 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:04,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 2273 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:44:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-10-17 10:44:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1432. [2022-10-17 10:44:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1302 states have (on average 1.5606758832565284) internal successors, (2032), 1307 states have internal predecessors, (2032), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-10-17 10:44:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2235 transitions. [2022-10-17 10:44:05,042 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2235 transitions. Word has length 144 [2022-10-17 10:44:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:05,043 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2235 transitions. [2022-10-17 10:44:05,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2235 transitions. [2022-10-17 10:44:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:44:05,046 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:05,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:05,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:44:05,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1429817056, now seen corresponding path program 1 times [2022-10-17 10:44:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:05,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654747481] [2022-10-17 10:44:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:05,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:44:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:44:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:44:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:44:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:44:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:05,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654747481] [2022-10-17 10:44:05,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654747481] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:05,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:05,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:05,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246319099] [2022-10-17 10:44:05,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:05,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:05,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:05,329 INFO L87 Difference]: Start difference. First operand 1432 states and 2235 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:08,595 INFO L93 Difference]: Finished difference Result 4913 states and 7789 transitions. [2022-10-17 10:44:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:44:08,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-10-17 10:44:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:08,621 INFO L225 Difference]: With dead ends: 4913 [2022-10-17 10:44:08,621 INFO L226 Difference]: Without dead ends: 3498 [2022-10-17 10:44:08,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:44:08,630 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1218 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:08,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2269 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:44:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-10-17 10:44:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2543. [2022-10-17 10:44:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2313 states have (on average 1.5555555555555556) internal successors, (3598), 2322 states have internal predecessors, (3598), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-10-17 10:44:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3967 transitions. [2022-10-17 10:44:09,003 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3967 transitions. Word has length 144 [2022-10-17 10:44:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:09,004 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3967 transitions. [2022-10-17 10:44:09,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3967 transitions. [2022-10-17 10:44:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:44:09,008 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:09,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:09,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:44:09,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -620591842, now seen corresponding path program 1 times [2022-10-17 10:44:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:09,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018290347] [2022-10-17 10:44:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:09,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:44:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:44:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:44:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:44:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:44:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:09,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:09,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018290347] [2022-10-17 10:44:09,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018290347] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:09,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:09,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921603080] [2022-10-17 10:44:09,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:09,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:09,307 INFO L87 Difference]: Start difference. First operand 2543 states and 3967 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:12,687 INFO L93 Difference]: Finished difference Result 8982 states and 14219 transitions. [2022-10-17 10:44:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:44:12,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-10-17 10:44:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:12,732 INFO L225 Difference]: With dead ends: 8982 [2022-10-17 10:44:12,732 INFO L226 Difference]: Without dead ends: 6456 [2022-10-17 10:44:12,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:44:12,743 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1217 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:12,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 2263 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:44:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2022-10-17 10:44:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 4770. [2022-10-17 10:44:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4340 states have (on average 1.552073732718894) internal successors, (6736), 4357 states have internal predecessors, (6736), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-10-17 10:44:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7455 transitions. [2022-10-17 10:44:13,411 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7455 transitions. Word has length 144 [2022-10-17 10:44:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:44:13,411 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 7455 transitions. [2022-10-17 10:44:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7455 transitions. [2022-10-17 10:44:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-10-17 10:44:13,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:44:13,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:44:13,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:44:13,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:44:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:44:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash -132544736, now seen corresponding path program 1 times [2022-10-17 10:44:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:44:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414190359] [2022-10-17 10:44:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:44:13,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:44:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:44:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:44:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-17 10:44:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:44:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-10-17 10:44:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:44:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:44:13,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:44:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414190359] [2022-10-17 10:44:13,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414190359] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:44:13,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:44:13,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:44:13,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377581970] [2022-10-17 10:44:13,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:44:13,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:44:13,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:44:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:44:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:44:13,694 INFO L87 Difference]: Start difference. First operand 4770 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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) [2022-10-17 10:44:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:44:17,633 INFO L93 Difference]: Finished difference Result 17104 states and 27109 transitions. [2022-10-17 10:44:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:44:17,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-10-17 10:44:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:44:17,722 INFO L225 Difference]: With dead ends: 17104 [2022-10-17 10:44:17,725 INFO L226 Difference]: Without dead ends: 12351 [2022-10-17 10:44:17,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:44:17,755 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1299 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:44:17,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1565 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:44:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states.