./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-lopstr16/motivex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-lopstr16/motivex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8 --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 849df4b411c63057254dcf3e90c1516f0bf7c8598b238d4e2298c0311f6d39f4 --- 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-e04fb08 [2022-11-16 11:08:59,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:08:59,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:08:59,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:08:59,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:08:59,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:08:59,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:08:59,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:08:59,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:08:59,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:08:59,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:08:59,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:08:59,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:09:00,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:09:00,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:09:00,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:09:00,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:09:00,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:09:00,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:09:00,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:09:00,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:09:00,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:09:00,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:09:00,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:09:00,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:09:00,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:09:00,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:09:00,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:09:00,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:09:00,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:09:00,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:09:00,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:09:00,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:09:00,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:09:00,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:09:00,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:09:00,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:09:00,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:09:00,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:09:00,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:09:00,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:09:00,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:09:00,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:09:00,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:09:00,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:09:00,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:09:00,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:09:00,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:09:00,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:09:00,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:09:00,098 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:09:00,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:09:00,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:09:00,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:09:00,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:09:00,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:09:00,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:09:00,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:09:00,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:09:00,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:09:00,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:09:00,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:09:00,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:09:00,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:09:00,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:09:00,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:09:00,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:00,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:09:00,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:09:00,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:09:00,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:09:00,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:09:00,106 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:09:00,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:09:00,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:09:00,107 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_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 849df4b411c63057254dcf3e90c1516f0bf7c8598b238d4e2298c0311f6d39f4 [2022-11-16 11:09:00,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:09:00,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:09:00,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:09:00,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:09:00,432 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:09:00,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-lopstr16/motivex.i [2022-11-16 11:09:00,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/data/ed57eac85/4f17adce937741df9efe301ec7c1cf93/FLAG90e0f8166 [2022-11-16 11:09:00,954 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:09:00,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/sv-benchmarks/c/array-lopstr16/motivex.i [2022-11-16 11:09:00,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/data/ed57eac85/4f17adce937741df9efe301ec7c1cf93/FLAG90e0f8166 [2022-11-16 11:09:01,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/data/ed57eac85/4f17adce937741df9efe301ec7c1cf93 [2022-11-16 11:09:01,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:09:01,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:09:01,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:01,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:09:01,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:09:01,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:01,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da4beeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01, skipping insertion in model container [2022-11-16 11:09:01,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:01,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:09:01,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:09:01,604 WARN L229 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_67bc5596-2a55-45a4-98fd-03d6028ad4ce/sv-benchmarks/c/array-lopstr16/motivex.i[800,813] [2022-11-16 11:09:01,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:01,941 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:09:01,953 WARN L229 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_67bc5596-2a55-45a4-98fd-03d6028ad4ce/sv-benchmarks/c/array-lopstr16/motivex.i[800,813] [2022-11-16 11:09:01,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:01,974 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:09:01,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01 WrapperNode [2022-11-16 11:09:01,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:01,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:01,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:09:01,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:09:01,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,036 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-16 11:09:02,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:02,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:09:02,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:09:02,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:09:02,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:09:02,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:09:02,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:09:02,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:09:02,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (1/1) ... [2022-11-16 11:09:02,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:02,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:02,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:09:02,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:09:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:09:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:09:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:09:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:09:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:09:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:09:02,242 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:09:02,244 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:09:02,469 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:09:02,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:09:02,475 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:09:02,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:02 BoogieIcfgContainer [2022-11-16 11:09:02,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:09:02,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:09:02,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:09:02,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:09:02,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:09:01" (1/3) ... [2022-11-16 11:09:02,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273aee43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:02, skipping insertion in model container [2022-11-16 11:09:02,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:01" (2/3) ... [2022-11-16 11:09:02,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273aee43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:02, skipping insertion in model container [2022-11-16 11:09:02,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:02" (3/3) ... [2022-11-16 11:09:02,486 INFO L112 eAbstractionObserver]: Analyzing ICFG motivex.i [2022-11-16 11:09:02,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:09:02,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:09:02,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:09:02,608 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;@6f458606, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:09:02,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:09:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:09:02,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:02,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:02,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:02,625 INFO L85 PathProgramCache]: Analyzing trace with hash 542545282, now seen corresponding path program 1 times [2022-11-16 11:09:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:02,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884742092] [2022-11-16 11:09:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884742092] [2022-11-16 11:09:02,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:09:02,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573929108] [2022-11-16 11:09:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:02,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:02,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:09:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:02,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:09:02,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:02,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:02,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573929108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:02,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:02,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:09:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072366942] [2022-11-16 11:09:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:02,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:09:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:09:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:09:03,012 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:03,024 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-16 11:09:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:09:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-16 11:09:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:03,040 INFO L225 Difference]: With dead ends: 38 [2022-11-16 11:09:03,040 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 11:09:03,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:09:03,049 INFO L413 NwaCegarLoop]: 25 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, 25 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 [2022-11-16 11:09:03,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:09:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 11:09:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 11:09:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-16 11:09:03,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-11-16 11:09:03,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:03,082 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-16 11:09:03,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-16 11:09:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:09:03,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:03,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:03,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:09:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:09:03,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash -630060617, now seen corresponding path program 1 times [2022-11-16 11:09:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:03,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211641034] [2022-11-16 11:09:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:03,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:03,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211641034] [2022-11-16 11:09:03,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:09:03,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386990121] [2022-11-16 11:09:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:03,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:03,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:03,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:09:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:03,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:09:03,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:03,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386990121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:03,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:03,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563304829] [2022-11-16 11:09:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:09:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:09:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:03,398 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:03,436 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-16 11:09:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:09:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-16 11:09:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:03,437 INFO L225 Difference]: With dead ends: 43 [2022-11-16 11:09:03,438 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:09:03,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:03,439 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:03,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:09:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:09:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2022-11-16 11:09:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-16 11:09:03,445 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2022-11-16 11:09:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:03,445 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-16 11:09:03,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-16 11:09:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:09:03,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:03,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:03,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:03,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:03,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:03,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2036151027, now seen corresponding path program 1 times [2022-11-16 11:09:03,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:03,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683019196] [2022-11-16 11:09:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:03,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683019196] [2022-11-16 11:09:03,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:09:03,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757233572] [2022-11-16 11:09:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:03,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:03,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:03,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:03,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:09:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:03,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:03,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:03,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:09:03,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757233572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:03,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:03,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 11:09:03,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038170046] [2022-11-16 11:09:03,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:09:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:09:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:03,865 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:03,968 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-11-16 11:09:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:09:03,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 [2022-11-16 11:09:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:03,970 INFO L225 Difference]: With dead ends: 73 [2022-11-16 11:09:03,970 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 11:09:03,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:03,971 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:03,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 35 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:09:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 11:09:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2022-11-16 11:09:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-16 11:09:03,978 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 16 [2022-11-16 11:09:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:03,978 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-16 11:09:03,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-16 11:09:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 11:09:03,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:03,979 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:03,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:04,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:09:04,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1366955217, now seen corresponding path program 2 times [2022-11-16 11:09:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:04,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357771041] [2022-11-16 11:09:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:04,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:04,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212086587] [2022-11-16 11:09:04,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:04,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:04,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:04,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:09:04,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:09:04,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:04,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:09:04,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:09:04,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:09:04,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:04,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357771041] [2022-11-16 11:09:04,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:04,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212086587] [2022-11-16 11:09:04,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212086587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:04,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:04,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 11:09:04,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889450500] [2022-11-16 11:09:04,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:04,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:09:04,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:04,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:09:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:09:04,578 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2022-11-16 11:09:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:04,844 INFO L93 Difference]: Finished difference Result 160 states and 200 transitions. [2022-11-16 11:09:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:09:04,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-16 11:09:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:04,846 INFO L225 Difference]: With dead ends: 160 [2022-11-16 11:09:04,846 INFO L226 Difference]: Without dead ends: 137 [2022-11-16 11:09:04,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:09:04,847 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 219 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:04,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 80 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:09:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-16 11:09:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 64. [2022-11-16 11:09:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2022-11-16 11:09:04,857 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 31 [2022-11-16 11:09:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:04,857 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2022-11-16 11:09:04,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2022-11-16 11:09:04,858 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2022-11-16 11:09:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 11:09:04,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:04,867 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:04,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:05,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash 67273059, now seen corresponding path program 3 times [2022-11-16 11:09:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:05,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207365339] [2022-11-16 11:09:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:05,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:05,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025914722] [2022-11-16 11:09:05,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:09:05,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:05,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:05,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:09:15,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 11:09:15,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:15,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:09:15,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 11:09:15,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 11:09:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:15,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207365339] [2022-11-16 11:09:15,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:15,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025914722] [2022-11-16 11:09:15,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025914722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:15,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:15,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-16 11:09:15,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141133744] [2022-11-16 11:09:15,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:15,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:09:15,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:15,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:09:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:09:15,523 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:15,969 INFO L93 Difference]: Finished difference Result 334 states and 416 transitions. [2022-11-16 11:09:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:09:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-16 11:09:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:15,972 INFO L225 Difference]: With dead ends: 334 [2022-11-16 11:09:15,972 INFO L226 Difference]: Without dead ends: 293 [2022-11-16 11:09:15,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:09:15,974 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 764 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:15,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 163 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:09:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-16 11:09:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 124. [2022-11-16 11:09:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.2113821138211383) internal successors, (149), 123 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2022-11-16 11:09:15,990 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 61 [2022-11-16 11:09:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:15,991 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2022-11-16 11:09:15,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2022-11-16 11:09:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:09:15,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:15,994 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:16,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:09:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:16,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1367348683, now seen corresponding path program 4 times [2022-11-16 11:09:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359066780] [2022-11-16 11:09:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:16,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:16,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995365954] [2022-11-16 11:09:16,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:09:16,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:16,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:16,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:09:16,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:09:16,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:16,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:09:16,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-16 11:09:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-16 11:09:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359066780] [2022-11-16 11:09:17,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995365954] [2022-11-16 11:09:17,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995365954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:17,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:17,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-16 11:09:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776416287] [2022-11-16 11:09:17,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:09:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:09:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:09:17,874 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:19,005 INFO L93 Difference]: Finished difference Result 682 states and 848 transitions. [2022-11-16 11:09:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:09:19,008 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-11-16 11:09:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:19,012 INFO L225 Difference]: With dead ends: 682 [2022-11-16 11:09:19,012 INFO L226 Difference]: Without dead ends: 605 [2022-11-16 11:09:19,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:09:19,015 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1608 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:19,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 332 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:09:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-16 11:09:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 244. [2022-11-16 11:09:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.205761316872428) internal successors, (293), 243 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 293 transitions. [2022-11-16 11:09:19,036 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 293 transitions. Word has length 121 [2022-11-16 11:09:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:19,037 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 293 transitions. [2022-11-16 11:09:19,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 48 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 293 transitions. [2022-11-16 11:09:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-16 11:09:19,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:19,041 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:19,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:19,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:09:19,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1689247387, now seen corresponding path program 5 times [2022-11-16 11:09:19,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:19,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135343234] [2022-11-16 11:09:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:19,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:19,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435435355] [2022-11-16 11:09:19,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:09:19,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:19,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:19,422 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:19,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67bc5596-2a55-45a4-98fd-03d6028ad4ce/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process