./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-optional-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-optional-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8 --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 8b0f1d623fff7bbdf74e6250d2f53fb98e44ca7ba1aae1265f5b0871b427fba0 --- 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-2329fc7 [2022-12-13 18:22:29,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:22:29,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:22:29,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:22:29,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:22:29,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:22:29,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:22:29,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:22:29,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:22:29,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:22:29,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:22:29,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:22:29,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:22:29,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:22:29,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:22:29,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:22:29,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:22:29,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:22:29,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:22:29,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:22:29,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:22:29,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:22:29,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:22:29,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:22:29,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:22:29,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:22:29,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:22:29,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:22:29,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:22:29,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:22:29,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:22:29,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:22:29,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:22:29,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:22:29,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:22:29,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:22:29,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:22:29,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:22:29,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:22:29,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:22:29,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:22:29,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:22:29,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:22:29,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:22:29,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:22:29,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:22:29,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:22:29,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:22:29,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:22:29,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:22:29,701 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:22:29,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:22:29,701 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:22:29,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:22:29,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:22:29,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:22:29,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:22:29,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:22:29,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:22:29,703 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:22:29,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:22:29,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:22:29,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:22:29,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:22:29,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:22:29,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:22:29,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:22:29,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:22:29,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:22:29,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:22:29,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:22:29,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:22:29,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:22:29,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:22:29,705 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:22:29,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:22:29,705 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:22:29,705 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0f1d623fff7bbdf74e6250d2f53fb98e44ca7ba1aae1265f5b0871b427fba0 [2022-12-13 18:22:29,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:22:29,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:22:29,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:22:29,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:22:29,892 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:22:29,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/forester-heap/sll-optional-1.i [2022-12-13 18:22:32,511 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:22:32,728 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:22:32,729 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/sv-benchmarks/c/forester-heap/sll-optional-1.i [2022-12-13 18:22:32,736 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/data/c82fee9d0/5389638c970448b786ea15b91e251e68/FLAGd40cc4165 [2022-12-13 18:22:32,746 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/data/c82fee9d0/5389638c970448b786ea15b91e251e68 [2022-12-13 18:22:32,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:22:32,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:22:32,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:22:32,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:22:32,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:22:32,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:22:32" (1/1) ... [2022-12-13 18:22:32,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64db03be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:32, skipping insertion in model container [2022-12-13 18:22:32,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:22:32" (1/1) ... [2022-12-13 18:22:32,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:22:32,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:22:33,021 WARN L237 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_afe8aacb-e62c-470b-a159-f5634d1b1ee7/sv-benchmarks/c/forester-heap/sll-optional-1.i[22688,22701] [2022-12-13 18:22:33,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:22:33,038 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:22:33,071 WARN L237 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_afe8aacb-e62c-470b-a159-f5634d1b1ee7/sv-benchmarks/c/forester-heap/sll-optional-1.i[22688,22701] [2022-12-13 18:22:33,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:22:33,095 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:22:33,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33 WrapperNode [2022-12-13 18:22:33,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:22:33,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:22:33,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:22:33,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:22:33,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,133 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2022-12-13 18:22:33,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:22:33,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:22:33,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:22:33,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:22:33,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:22:33,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:22:33,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:22:33,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:22:33,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (1/1) ... [2022-12-13 18:22:33,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:22:33,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:22:33,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:22:33,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:22:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:22:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:22:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:22:33,298 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:22:33,299 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:22:33,500 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:22:33,506 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:22:33,506 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 18:22:33,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:22:33 BoogieIcfgContainer [2022-12-13 18:22:33,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:22:33,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:22:33,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:22:33,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:22:33,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:22:32" (1/3) ... [2022-12-13 18:22:33,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b184b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:22:33, skipping insertion in model container [2022-12-13 18:22:33,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:22:33" (2/3) ... [2022-12-13 18:22:33,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b184b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:22:33, skipping insertion in model container [2022-12-13 18:22:33,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:22:33" (3/3) ... [2022-12-13 18:22:33,517 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-optional-1.i [2022-12-13 18:22:33,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:22:33,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:22:33,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:22:33,583 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;@5ee3c583, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:22:33,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:22:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 18:22:33,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:33,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:33,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash 573386926, now seen corresponding path program 1 times [2022-12-13 18:22:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:33,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612471504] [2022-12-13 18:22:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:33,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612471504] [2022-12-13 18:22:33,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612471504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:22:33,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:22:33,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:22:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747490143] [2022-12-13 18:22:33,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:22:33,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:22:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:33,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:22:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:22:33,792 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:33,805 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2022-12-13 18:22:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:22:33,807 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 18:22:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:33,812 INFO L225 Difference]: With dead ends: 51 [2022-12-13 18:22:33,813 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 18:22:33,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:22:33,817 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:33,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:22:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 18:22:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 18:22:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-12-13 18:22:33,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2022-12-13 18:22:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:33,840 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-12-13 18:22:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-12-13 18:22:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 18:22:33,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:33,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:22:33,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1170055612, now seen corresponding path program 1 times [2022-12-13 18:22:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554482566] [2022-12-13 18:22:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:33,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:33,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554482566] [2022-12-13 18:22:33,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554482566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:22:33,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:22:33,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:22:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090982561] [2022-12-13 18:22:33,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:22:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:22:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:22:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:22:33,959 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:33,986 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2022-12-13 18:22:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:22:33,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 18:22:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:33,987 INFO L225 Difference]: With dead ends: 37 [2022-12-13 18:22:33,988 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 18:22:33,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:22:33,989 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:33,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:22:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 18:22:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-13 18:22:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-12-13 18:22:33,993 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 16 [2022-12-13 18:22:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:33,994 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-12-13 18:22:33,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-12-13 18:22:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 18:22:33,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:33,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:22:33,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1170053690, now seen corresponding path program 1 times [2022-12-13 18:22:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:33,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974168193] [2022-12-13 18:22:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:34,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974168193] [2022-12-13 18:22:34,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974168193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:22:34,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:22:34,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:22:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772039090] [2022-12-13 18:22:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:22:34,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:22:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:22:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:22:34,176 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:34,342 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2022-12-13 18:22:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:22:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 18:22:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:34,343 INFO L225 Difference]: With dead ends: 41 [2022-12-13 18:22:34,343 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 18:22:34,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:22:34,345 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:34,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 81 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:22:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 18:22:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-12-13 18:22:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-12-13 18:22:34,350 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 16 [2022-12-13 18:22:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:34,350 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-12-13 18:22:34,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-12-13 18:22:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 18:22:34,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:34,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:22:34,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1171900732, now seen corresponding path program 1 times [2022-12-13 18:22:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:34,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816672550] [2022-12-13 18:22:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:34,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816672550] [2022-12-13 18:22:34,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816672550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:22:34,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:22:34,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:22:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376982852] [2022-12-13 18:22:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:22:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:22:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:22:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:22:34,826 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:35,076 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2022-12-13 18:22:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:22:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 18:22:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:35,077 INFO L225 Difference]: With dead ends: 93 [2022-12-13 18:22:35,077 INFO L226 Difference]: Without dead ends: 74 [2022-12-13 18:22:35,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:22:35,078 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 104 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:35,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 79 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:22:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-13 18:22:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2022-12-13 18:22:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2022-12-13 18:22:35,084 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 16 [2022-12-13 18:22:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:35,084 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2022-12-13 18:22:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2022-12-13 18:22:35,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 18:22:35,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:35,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:35,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:22:35,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash 604953672, now seen corresponding path program 1 times [2022-12-13 18:22:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:35,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197759962] [2022-12-13 18:22:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:35,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:35,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197759962] [2022-12-13 18:22:35,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197759962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:22:35,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:22:35,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:22:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220192725] [2022-12-13 18:22:35,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:22:35,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:22:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:22:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:22:35,195 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:35,316 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2022-12-13 18:22:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:22:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 18:22:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:35,317 INFO L225 Difference]: With dead ends: 87 [2022-12-13 18:22:35,317 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 18:22:35,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:22:35,318 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 81 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:35,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 73 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:22:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 18:22:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 40. [2022-12-13 18:22:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-12-13 18:22:35,323 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 16 [2022-12-13 18:22:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:35,323 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-12-13 18:22:35,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-12-13 18:22:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 18:22:35,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:35,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:35,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:22:35,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash 466614784, now seen corresponding path program 1 times [2022-12-13 18:22:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:35,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546251579] [2022-12-13 18:22:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:35,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:35,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546251579] [2022-12-13 18:22:35,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546251579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:22:35,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:22:35,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:22:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249472987] [2022-12-13 18:22:35,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:22:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:22:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:22:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:22:35,421 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:35,534 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2022-12-13 18:22:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:22:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 18:22:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:35,535 INFO L225 Difference]: With dead ends: 86 [2022-12-13 18:22:35,535 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 18:22:35,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:22:35,536 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:35,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 110 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:22:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 18:22:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 50. [2022-12-13 18:22:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2022-12-13 18:22:35,542 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 17 [2022-12-13 18:22:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:35,543 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2022-12-13 18:22:35,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:22:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2022-12-13 18:22:35,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 18:22:35,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:35,543 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:35,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:22:35,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1690516158, now seen corresponding path program 1 times [2022-12-13 18:22:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:35,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248944247] [2022-12-13 18:22:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:35,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248944247] [2022-12-13 18:22:36,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248944247] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:22:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30164004] [2022-12-13 18:22:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:36,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:22:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:22:36,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:22:36,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afe8aacb-e62c-470b-a159-f5634d1b1ee7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:22:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:36,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-13 18:22:36,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:22:36,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:22:36,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 18:22:36,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 18:22:36,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-13 18:22:36,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 42 [2022-12-13 18:22:36,625 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-12-13 18:22:36,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-12-13 18:22:36,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-13 18:22:36,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-12-13 18:22:36,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-13 18:22:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-13 18:22:36,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,813 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-13 18:22:36,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 52 [2022-12-13 18:22:36,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:36,832 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 18:22:36,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 61 [2022-12-13 18:22:36,857 INFO L321 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2022-12-13 18:22:36,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 45 [2022-12-13 18:22:36,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2022-12-13 18:22:36,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:37,032 INFO L321 Elim1Store]: treesize reduction 166, result has 14.0 percent of original size [2022-12-13 18:22:37,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 168 treesize of output 189 [2022-12-13 18:22:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:37,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:37,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:22:37,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 54 [2022-12-13 18:22:37,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-12-13 18:22:37,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-12-13 18:22:37,111 INFO L321 Elim1Store]: treesize reduction 12, result has 79.7 percent of original size [2022-12-13 18:22:37,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 59 [2022-12-13 18:22:37,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-12-13 18:22:37,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-13 18:22:37,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-12-13 18:22:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:22:38,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:22:38,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:22:38,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 219 [2022-12-13 18:22:38,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:22:38,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 275 treesize of output 243 [2022-12-13 18:23:07,155 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 25 DAG size of output: 22 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 18:23:07,155 INFO L321 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2022-12-13 18:23:07,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3681 treesize of output 3008 [2022-12-13 18:24:43,117 WARN L233 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 1381 DAG size of output: 609 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 18:24:43,120 INFO L321 Elim1Store]: treesize reduction 3881, result has 35.3 percent of original size [2022-12-13 18:24:43,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 32 new quantified variables, introduced 325 case distinctions, treesize of input 72650128 treesize of output 71730995 [2022-12-13 18:25:29,683 WARN L233 SmtUtils]: Spent 46.55s on a formula simplification that was a NOOP. DAG size: 8284 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 18:26:15,471 WARN L233 SmtUtils]: Spent 45.74s on a formula simplification that was a NOOP. DAG size: 8253 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 18:26:21,784 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 26 DAG size of output: 23 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 18:26:21,785 INFO L321 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2022-12-13 18:26:21,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 118546753 treesize of output 82111088 [2022-12-13 18:27:32,681 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification that was a NOOP. DAG size: 8654 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 18:29:17,480 INFO L217 Elim1Store]: Index analysis took 190 ms [2022-12-13 18:36:49,907 WARN L233 SmtUtils]: Spent 7.53m on a formula simplification. DAG size of input: 1391 DAG size of output: 631 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 18:36:49,909 INFO L321 Elim1Store]: treesize reduction 5067, result has 34.2 percent of original size [2022-12-13 18:36:50,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 325 case distinctions, treesize of input 7821019610 treesize of output 7544538635