./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/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_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/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 64bit --witnessprinter.graph.data.programhash 3367ca2af675968fa63d26b722a06c3baa5f8314efbfc736a179d6886af9de22 --- 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 11:17:10,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:17:10,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:17:10,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:17:10,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:17:10,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:17:10,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:17:10,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:17:10,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:17:10,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:17:10,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:17:10,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:17:10,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:17:10,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:17:10,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:17:10,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:17:10,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:17:10,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:17:10,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:17:10,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:17:10,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:17:10,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:17:10,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:17:10,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:17:10,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:17:10,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:17:10,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:17:10,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:17:10,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:17:10,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:17:10,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:17:10,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:17:10,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:17:10,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:17:10,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:17:10,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:17:10,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:17:10,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:17:10,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:17:10,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:17:10,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:17:10,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:17:10,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:17:10,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:17:10,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:17:10,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:17:10,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:17:10,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:17:10,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:17:10,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:17:10,930 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:17:10,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:17:10,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:17:10,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:17:10,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:17:10,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:17:10,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:17:10,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:17:10,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:17:10,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:17:10,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:17:10,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:17:10,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:17:10,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:10,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:17:10,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:17:10,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:17:10,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:17:10,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:17:10,939 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:17:10,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:17:10,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:17:10,941 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_b606add6-ced1-47f4-8b28-149d35752310/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3367ca2af675968fa63d26b722a06c3baa5f8314efbfc736a179d6886af9de22 [2022-11-16 11:17:11,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:17:11,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:17:11,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:17:11,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:17:11,421 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:17:11,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c [2022-11-16 11:17:11,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/data/7b5d762c5/e86a0d11f393418fb4c02a6838817720/FLAGcc94e19cb [2022-11-16 11:17:12,347 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:17:12,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c [2022-11-16 11:17:12,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/data/7b5d762c5/e86a0d11f393418fb4c02a6838817720/FLAGcc94e19cb [2022-11-16 11:17:12,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/data/7b5d762c5/e86a0d11f393418fb4c02a6838817720 [2022-11-16 11:17:12,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:17:12,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:17:12,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:12,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:17:12,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:17:12,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:12" (1/1) ... [2022-11-16 11:17:12,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66becd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:12, skipping insertion in model container [2022-11-16 11:17:12,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:12" (1/1) ... [2022-11-16 11:17:12,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:17:12,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:17:12,952 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_b606add6-ced1-47f4-8b28-149d35752310/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c[1014,1027] [2022-11-16 11:17:13,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:13,852 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:17:13,866 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_b606add6-ced1-47f4-8b28-149d35752310/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.6.prop1-func-interl.c[1014,1027] [2022-11-16 11:17:14,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:14,246 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:17:14,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14 WrapperNode [2022-11-16 11:17:14,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:14,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:14,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:17:14,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:17:14,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:14,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:14,851 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6206 [2022-11-16 11:17:14,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:14,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:17:14,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:17:14,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:17:14,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:14,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:14,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:14,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:15,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:15,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:15,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:15,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:15,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:17:15,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:17:15,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:17:15,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:17:15,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (1/1) ... [2022-11-16 11:17:15,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:15,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:17:15,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:17:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:17:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:17:16,358 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:17:16,360 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:17:38,632 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:17:38,651 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:17:38,651 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:17:38,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:38 BoogieIcfgContainer [2022-11-16 11:17:38,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:17:38,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:17:38,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:17:38,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:17:38,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:17:12" (1/3) ... [2022-11-16 11:17:38,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeee10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:38, skipping insertion in model container [2022-11-16 11:17:38,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:14" (2/3) ... [2022-11-16 11:17:38,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeee10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:38, skipping insertion in model container [2022-11-16 11:17:38,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:38" (3/3) ... [2022-11-16 11:17:38,667 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.6.prop1-func-interl.c [2022-11-16 11:17:38,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:17:38,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:17:38,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:17:38,812 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;@1fe79f62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:17:38,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:17:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 1058 states, 1056 states have (on average 1.6647727272727273) internal successors, (1758), 1057 states have internal predecessors, (1758), 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 11:17:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 11:17:38,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:38,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:38,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 148890686, now seen corresponding path program 1 times [2022-11-16 11:17:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016397450] [2022-11-16 11:17:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:39,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016397450] [2022-11-16 11:17:39,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016397450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:39,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:39,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:17:39,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486484209] [2022-11-16 11:17:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:39,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:39,892 INFO L87 Difference]: Start difference. First operand has 1058 states, 1056 states have (on average 1.6647727272727273) internal successors, (1758), 1057 states have internal predecessors, (1758), 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 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 11:17:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:40,459 INFO L93 Difference]: Finished difference Result 3295 states and 5487 transitions. [2022-11-16 11:17:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:17:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 95 [2022-11-16 11:17:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:40,499 INFO L225 Difference]: With dead ends: 3295 [2022-11-16 11:17:40,499 INFO L226 Difference]: Without dead ends: 2239 [2022-11-16 11:17:40,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:40,519 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 5232 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5232 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5232 Valid, 4168 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:17:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2022-11-16 11:17:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1056. [2022-11-16 11:17:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1055 states have (on average 1.6625592417061612) internal successors, (1754), 1055 states have internal predecessors, (1754), 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 11:17:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1754 transitions. [2022-11-16 11:17:40,679 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1754 transitions. Word has length 95 [2022-11-16 11:17:40,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:40,682 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1754 transitions. [2022-11-16 11:17:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 11:17:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1754 transitions. [2022-11-16 11:17:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 11:17:40,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:40,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:40,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:17:40,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 322369458, now seen corresponding path program 1 times [2022-11-16 11:17:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:40,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192808430] [2022-11-16 11:17:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:41,258 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 11:17:41,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192808430] [2022-11-16 11:17:41,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192808430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:41,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:41,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:17:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814801833] [2022-11-16 11:17:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:17:41,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:17:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:41,269 INFO L87 Difference]: Start difference. First operand 1056 states and 1754 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 11:17:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:41,583 INFO L93 Difference]: Finished difference Result 4335 states and 7210 transitions. [2022-11-16 11:17:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:17:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 96 [2022-11-16 11:17:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:41,601 INFO L225 Difference]: With dead ends: 4335 [2022-11-16 11:17:41,602 INFO L226 Difference]: Without dead ends: 3281 [2022-11-16 11:17:41,611 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 [2022-11-16 11:17:41,614 INFO L413 NwaCegarLoop]: 1967 mSDtfsCounter, 6883 mSDsluCounter, 5453 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6883 SdHoareTripleChecker+Valid, 7420 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:41,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6883 Valid, 7420 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:17:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-11-16 11:17:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1190. [2022-11-16 11:17:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.661900756938604) internal successors, (1976), 1189 states have internal predecessors, (1976), 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 11:17:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1976 transitions. [2022-11-16 11:17:41,678 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1976 transitions. Word has length 96 [2022-11-16 11:17:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:41,681 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1976 transitions. [2022-11-16 11:17:41,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 11:17:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1976 transitions. [2022-11-16 11:17:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2022-11-16 11:17:41,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:41,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:41,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:17:41,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:41,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1232319037, now seen corresponding path program 1 times [2022-11-16 11:17:41,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:41,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971871653] [2022-11-16 11:17:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:42,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:17:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872742151] [2022-11-16 11:17:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:42,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:17:42,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:42,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:17:42,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:17:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:45,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 6986 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:17:45,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:17:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:49,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:17:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 11:17:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:49,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971871653] [2022-11-16 11:17:49,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:17:49,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872742151] [2022-11-16 11:17:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872742151] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:17:49,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:17:49,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-16 11:17:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914584341] [2022-11-16 11:17:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:49,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:17:49,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:17:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:17:49,729 INFO L87 Difference]: Start difference. First operand 1190 states and 1976 transitions. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 11:17:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:59,730 INFO L93 Difference]: Finished difference Result 6722 states and 10965 transitions. [2022-11-16 11:17:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:17:59,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 797 [2022-11-16 11:17:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:59,754 INFO L225 Difference]: With dead ends: 6722 [2022-11-16 11:17:59,755 INFO L226 Difference]: Without dead ends: 5668 [2022-11-16 11:17:59,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1596 GetRequests, 1586 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:17:59,759 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 9616 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 5845 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9616 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 6490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 5845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:59,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9616 Valid, 2856 Invalid, 6490 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [645 Valid, 5845 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-16 11:17:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2022-11-16 11:17:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 1193. [2022-11-16 11:17:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1192 states have (on average 1.6610738255033557) internal successors, (1980), 1192 states have internal predecessors, (1980), 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 11:17:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1980 transitions. [2022-11-16 11:17:59,826 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1980 transitions. Word has length 797 [2022-11-16 11:17:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:59,828 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1980 transitions. [2022-11-16 11:17:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 11:17:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1980 transitions. [2022-11-16 11:17:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2022-11-16 11:17:59,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:59,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:59,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:18:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:00,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1232378619, now seen corresponding path program 1 times [2022-11-16 11:18:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:00,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961706034] [2022-11-16 11:18:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:00,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:18:00,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043482306] [2022-11-16 11:18:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:00,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:00,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:18:00,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:18:00,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:18:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:03,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 6986 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:18:04,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:18:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:18:05,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:18:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 11:18:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:05,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961706034] [2022-11-16 11:18:05,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:18:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043482306] [2022-11-16 11:18:05,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043482306] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:18:05,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:18:05,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-16 11:18:05,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616839715] [2022-11-16 11:18:05,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:18:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:18:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:18:05,264 INFO L87 Difference]: Start difference. First operand 1193 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 11:18:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:05,400 INFO L93 Difference]: Finished difference Result 4343 states and 7219 transitions. [2022-11-16 11:18:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:18:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 797 [2022-11-16 11:18:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:05,417 INFO L225 Difference]: With dead ends: 4343 [2022-11-16 11:18:05,417 INFO L226 Difference]: Without dead ends: 3286 [2022-11-16 11:18:05,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1594 GetRequests, 1588 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:18:05,424 INFO L413 NwaCegarLoop]: 1969 mSDtfsCounter, 5222 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:05,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 5673 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:18:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2022-11-16 11:18:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 1190. [2022-11-16 11:18:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.661900756938604) internal successors, (1976), 1189 states have internal predecessors, (1976), 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 11:18:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1976 transitions. [2022-11-16 11:18:05,474 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1976 transitions. Word has length 797 [2022-11-16 11:18:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:05,475 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1976 transitions. [2022-11-16 11:18:05,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 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 11:18:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1976 transitions. [2022-11-16 11:18:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2022-11-16 11:18:05,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:05,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:05,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:18:05,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:05,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:05,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:05,736 INFO L85 PathProgramCache]: Analyzing trace with hash -663247443, now seen corresponding path program 1 times [2022-11-16 11:18:05,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:05,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635709695] [2022-11-16 11:18:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:06,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:18:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960232442] [2022-11-16 11:18:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:06,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:06,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:18:06,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:18:06,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:18:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:09,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 6989 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 11:18:09,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:18:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:18:12,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:18:12,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:12,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635709695] [2022-11-16 11:18:12,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:18:12,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960232442] [2022-11-16 11:18:12,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960232442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:12,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:12,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:18:12,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296298443] [2022-11-16 11:18:12,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:18:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:18:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:18:12,783 INFO L87 Difference]: Start difference. First operand 1190 states and 1976 transitions. Second operand has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 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 11:18:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:19,031 INFO L93 Difference]: Finished difference Result 3163 states and 5255 transitions. [2022-11-16 11:18:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:18:19,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 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 798 [2022-11-16 11:18:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:19,043 INFO L225 Difference]: With dead ends: 3163 [2022-11-16 11:18:19,044 INFO L226 Difference]: Without dead ends: 2107 [2022-11-16 11:18:19,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:18:19,047 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1651 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 4282 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 4283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:19,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 973 Invalid, 4283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4282 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 11:18:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2022-11-16 11:18:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1197. [2022-11-16 11:18:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 1.6580267558528428) internal successors, (1983), 1196 states have internal predecessors, (1983), 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 11:18:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1983 transitions. [2022-11-16 11:18:19,088 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1983 transitions. Word has length 798 [2022-11-16 11:18:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:19,089 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1983 transitions. [2022-11-16 11:18:19,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 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 11:18:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1983 transitions. [2022-11-16 11:18:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-11-16 11:18:19,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:19,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:19,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:18:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:19,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1194431461, now seen corresponding path program 1 times [2022-11-16 11:18:19,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:19,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564063939] [2022-11-16 11:18:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:19,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:18:19,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920237411] [2022-11-16 11:18:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:19,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:18:19,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:18:19,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:18:19,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b606add6-ced1-47f4-8b28-149d35752310/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:18:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:27,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 6992 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-16 11:18:27,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:18:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:18:37,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:20:20,978 WARN L233 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 8161 DAG size of output: 8130 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)