./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro --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 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 --- 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-8393723 [2022-11-18 19:34:43,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:34:43,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:34:43,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:34:43,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:34:43,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:34:43,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:34:43,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:34:43,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:34:43,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:34:43,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:34:43,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:34:43,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:34:43,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:34:43,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:34:43,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:34:43,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:34:43,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:34:43,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:34:43,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:34:43,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:34:43,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:34:43,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:34:43,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:34:43,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:34:43,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:34:43,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:34:43,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:34:43,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:34:43,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:34:43,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:34:43,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:34:43,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:34:43,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:34:43,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:34:43,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:34:43,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:34:43,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:34:43,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:34:43,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:34:43,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:34:43,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:34:43,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:34:43,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:34:43,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:34:43,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:34:43,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:34:43,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:34:43,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:34:43,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:34:43,697 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:34:43,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:34:43,698 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:34:43,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:34:43,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:34:43,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:34:43,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:34:43,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:34:43,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:34:43,703 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:34:43,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:34:43,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:34:43,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:34:43,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:34:43,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:34:43,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:34:43,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:43,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:34:43,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:34:43,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:34:43,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:34:43,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:34:43,708 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:34:43,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:34:43,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:34:43,709 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_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5840bf8cb045a250261e3957017079dce43a53700f7c91e31c16b36d5b980e00 [2022-11-18 19:34:43,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:34:43,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:34:44,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:34:44,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:34:44,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:34:44,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive/gcd02.c [2022-11-18 19:34:44,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/data/b37fd2b71/b8efc23c68054a9aada471470bc7e528/FLAG1040c60a6 [2022-11-18 19:34:44,623 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:34:44,624 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/sv-benchmarks/c/recursive/gcd02.c [2022-11-18 19:34:44,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/data/b37fd2b71/b8efc23c68054a9aada471470bc7e528/FLAG1040c60a6 [2022-11-18 19:34:45,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/data/b37fd2b71/b8efc23c68054a9aada471470bc7e528 [2022-11-18 19:34:45,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:34:45,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:34:45,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:45,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:34:45,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:34:45,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282af28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45, skipping insertion in model container [2022-11-18 19:34:45,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:34:45,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:34:45,276 WARN L234 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_042d1e09-02d4-4d21-9f67-8eb128a92c87/sv-benchmarks/c/recursive/gcd02.c[623,636] [2022-11-18 19:34:45,287 WARN L234 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_042d1e09-02d4-4d21-9f67-8eb128a92c87/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2022-11-18 19:34:45,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:45,297 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:34:45,307 WARN L234 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_042d1e09-02d4-4d21-9f67-8eb128a92c87/sv-benchmarks/c/recursive/gcd02.c[623,636] [2022-11-18 19:34:45,313 WARN L234 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_042d1e09-02d4-4d21-9f67-8eb128a92c87/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2022-11-18 19:34:45,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:45,328 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:34:45,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45 WrapperNode [2022-11-18 19:34:45,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:45,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:45,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:34:45,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:34:45,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,365 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-11-18 19:34:45,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:45,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:34:45,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:34:45,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:34:45,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:34:45,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:34:45,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:34:45,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:34:45,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (1/1) ... [2022-11-18 19:34:45,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:45,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:45,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:34:45,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:34:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:34:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2022-11-18 19:34:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2022-11-18 19:34:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:34:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2022-11-18 19:34:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2022-11-18 19:34:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:34:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:34:45,529 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:34:45,532 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:34:45,763 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:34:45,769 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:34:45,769 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:34:45,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:45 BoogieIcfgContainer [2022-11-18 19:34:45,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:34:45,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:34:45,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:34:45,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:34:45,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:34:45" (1/3) ... [2022-11-18 19:34:45,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f885e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:45, skipping insertion in model container [2022-11-18 19:34:45,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:45" (2/3) ... [2022-11-18 19:34:45,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f885e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:45, skipping insertion in model container [2022-11-18 19:34:45,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:45" (3/3) ... [2022-11-18 19:34:45,780 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd02.c [2022-11-18 19:34:45,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:34:45,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 19:34:45,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:34:45,916 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;@280610bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:34:45,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 19:34:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:34:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:34:45,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:45,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:45,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1041004109, now seen corresponding path program 1 times [2022-11-18 19:34:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:45,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415033270] [2022-11-18 19:34:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:45,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:46,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415033270] [2022-11-18 19:34:46,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415033270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:46,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:46,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:34:46,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408991261] [2022-11-18 19:34:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:46,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:46,512 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:46,731 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2022-11-18 19:34:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:46,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:34:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:46,741 INFO L225 Difference]: With dead ends: 78 [2022-11-18 19:34:46,741 INFO L226 Difference]: Without dead ends: 41 [2022-11-18 19:34:46,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:46,748 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:46,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 133 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-18 19:34:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-18 19:34:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:34:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2022-11-18 19:34:46,799 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 9 [2022-11-18 19:34:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:46,799 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2022-11-18 19:34:46,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2022-11-18 19:34:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:34:46,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:46,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:46,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:34:46,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1602001293, now seen corresponding path program 1 times [2022-11-18 19:34:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:46,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838206180] [2022-11-18 19:34:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:46,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:47,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:47,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838206180] [2022-11-18 19:34:47,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838206180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:47,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:47,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:34:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377354619] [2022-11-18 19:34:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:47,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:47,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:47,044 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:47,200 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2022-11-18 19:34:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:34:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:47,205 INFO L225 Difference]: With dead ends: 59 [2022-11-18 19:34:47,205 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 19:34:47,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:47,207 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:47,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 19:34:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-11-18 19:34:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 19:34:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-11-18 19:34:47,230 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 14 [2022-11-18 19:34:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:47,230 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-11-18 19:34:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-11-18 19:34:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:34:47,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:47,232 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:34:47,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gcdErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1599171148, now seen corresponding path program 1 times [2022-11-18 19:34:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:47,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334249949] [2022-11-18 19:34:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:47,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334249949] [2022-11-18 19:34:47,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334249949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:47,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:47,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700508400] [2022-11-18 19:34:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:47,350 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:47,474 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-11-18 19:34:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:34:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:47,477 INFO L225 Difference]: With dead ends: 63 [2022-11-18 19:34:47,477 INFO L226 Difference]: Without dead ends: 61 [2022-11-18 19:34:47,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:47,479 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:47,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 147 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-18 19:34:47,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2022-11-18 19:34:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 19:34:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2022-11-18 19:34:47,492 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 14 [2022-11-18 19:34:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:47,492 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2022-11-18 19:34:47,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2022-11-18 19:34:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:34:47,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:47,498 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] [2022-11-18 19:34:47,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:34:47,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:47,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2110562560, now seen corresponding path program 1 times [2022-11-18 19:34:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:47,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066053095] [2022-11-18 19:34:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:47,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066053095] [2022-11-18 19:34:47,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066053095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:47,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:47,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:34:47,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650455281] [2022-11-18 19:34:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:47,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:47,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:47,634 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:34:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:47,650 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-11-18 19:34:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:34:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-18 19:34:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:47,652 INFO L225 Difference]: With dead ends: 55 [2022-11-18 19:34:47,652 INFO L226 Difference]: Without dead ends: 51 [2022-11-18 19:34:47,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:34:47,654 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:47,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:47,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-18 19:34:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-18 19:34:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-18 19:34:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-11-18 19:34:47,663 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2022-11-18 19:34:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:47,664 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-11-18 19:34:47,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:34:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-11-18 19:34:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:34:47,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:47,665 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] [2022-11-18 19:34:47,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:34:47,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash -291106652, now seen corresponding path program 1 times [2022-11-18 19:34:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:47,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957625135] [2022-11-18 19:34:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:47,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:47,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957625135] [2022-11-18 19:34:47,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957625135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:47,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:47,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:34:47,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574797940] [2022-11-18 19:34:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:47,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:34:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:34:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:47,877 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:34:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:48,048 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-18 19:34:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:34:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-11-18 19:34:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:48,061 INFO L225 Difference]: With dead ends: 69 [2022-11-18 19:34:48,061 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 19:34:48,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:48,063 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:48,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 100 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 19:34:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2022-11-18 19:34:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.205128205128205) internal successors, (47), 42 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-18 19:34:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2022-11-18 19:34:48,077 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 21 [2022-11-18 19:34:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:48,077 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2022-11-18 19:34:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:34:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2022-11-18 19:34:48,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:34:48,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:48,079 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:34:48,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:34:48,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:48,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1709846180, now seen corresponding path program 1 times [2022-11-18 19:34:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:48,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19931197] [2022-11-18 19:34:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:48,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:34:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:34:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:48,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19931197] [2022-11-18 19:34:48,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19931197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:48,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:48,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219058391] [2022-11-18 19:34:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:48,201 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:34:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:48,231 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2022-11-18 19:34:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:48,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-18 19:34:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:48,235 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:34:48,235 INFO L226 Difference]: Without dead ends: 55 [2022-11-18 19:34:48,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:48,240 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:48,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-18 19:34:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-18 19:34:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-18 19:34:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-11-18 19:34:48,256 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2022-11-18 19:34:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:48,257 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-11-18 19:34:48,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:34:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-11-18 19:34:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 19:34:48,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:48,263 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:34:48,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:34:48,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:48,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1148028586, now seen corresponding path program 1 times [2022-11-18 19:34:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:48,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576525245] [2022-11-18 19:34:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:48,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:34:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:48,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576525245] [2022-11-18 19:34:48,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576525245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:48,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595502535] [2022-11-18 19:34:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:48,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:48,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:48,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:48,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:34:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:48,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:34:48,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:48,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:49,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595502535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:49,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:49,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 15 [2022-11-18 19:34:49,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962968797] [2022-11-18 19:34:49,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:49,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:34:49,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:34:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:34:49,196 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 15 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:34:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:49,445 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2022-11-18 19:34:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2022-11-18 19:34:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:49,447 INFO L225 Difference]: With dead ends: 63 [2022-11-18 19:34:49,447 INFO L226 Difference]: Without dead ends: 55 [2022-11-18 19:34:49,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:34:49,448 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:49,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 152 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-18 19:34:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-11-18 19:34:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 19:34:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-11-18 19:34:49,458 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 28 [2022-11-18 19:34:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:49,459 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-11-18 19:34:49,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:34:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-11-18 19:34:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:34:49,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:49,466 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:34:49,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:49,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:49,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash -729806600, now seen corresponding path program 1 times [2022-11-18 19:34:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:49,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136454494] [2022-11-18 19:34:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:34:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:49,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136454494] [2022-11-18 19:34:49,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136454494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:49,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357932931] [2022-11-18 19:34:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:49,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:49,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:49,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:49,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:34:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:49,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:34:49,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:34:50,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:50,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357932931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:50,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:50,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-18 19:34:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066791343] [2022-11-18 19:34:50,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:34:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:34:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:34:50,545 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 20 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-18 19:34:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:50,818 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2022-11-18 19:34:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:50,819 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2022-11-18 19:34:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:50,820 INFO L225 Difference]: With dead ends: 74 [2022-11-18 19:34:50,820 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 19:34:50,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:34:50,821 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:50,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 202 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:34:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 19:34:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2022-11-18 19:34:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 10 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-18 19:34:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2022-11-18 19:34:50,832 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 29 [2022-11-18 19:34:50,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:50,833 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2022-11-18 19:34:50,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 16 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-18 19:34:50,833 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2022-11-18 19:34:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:34:50,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:50,834 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:34:50,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:34:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:34:51,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1241581992, now seen corresponding path program 1 times [2022-11-18 19:34:51,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:51,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846493854] [2022-11-18 19:34:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:51,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:51,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:51,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846493854] [2022-11-18 19:34:51,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846493854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:51,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:51,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:34:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578068193] [2022-11-18 19:34:51,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:51,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:34:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:34:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:51,236 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:34:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:51,401 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2022-11-18 19:34:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-11-18 19:34:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:51,403 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:34:51,403 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:34:51,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:51,404 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:51,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 113 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:34:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2022-11-18 19:34:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 44 states have internal predecessors, (50), 10 states have call successors, (10), 4 states have call predecessors, (10), 8 states have return successors, (19), 14 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-18 19:34:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2022-11-18 19:34:51,414 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 29 [2022-11-18 19:34:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:51,414 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2022-11-18 19:34:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:34:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2022-11-18 19:34:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:34:51,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:51,431 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:34:51,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:34:51,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2029271682, now seen corresponding path program 1 times [2022-11-18 19:34:51,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:51,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299386093] [2022-11-18 19:34:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:34:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:34:51,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299386093] [2022-11-18 19:34:51,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299386093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286096879] [2022-11-18 19:34:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:51,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:51,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:51,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:51,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:34:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:51,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:34:51,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:34:51,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:34:52,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286096879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:52,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:52,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 21 [2022-11-18 19:34:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039159859] [2022-11-18 19:34:52,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:52,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:34:52,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:34:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:34:52,644 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 19:34:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:53,009 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2022-11-18 19:34:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2022-11-18 19:34:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:53,014 INFO L225 Difference]: With dead ends: 89 [2022-11-18 19:34:53,015 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 19:34:53,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:34:53,017 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:53,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 185 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:34:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 19:34:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2022-11-18 19:34:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (27), 17 states have call predecessors, (27), 11 states have call successors, (27) [2022-11-18 19:34:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2022-11-18 19:34:53,060 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 36 [2022-11-18 19:34:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:53,061 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2022-11-18 19:34:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 19:34:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2022-11-18 19:34:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:34:53,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:53,065 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:34:53,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:53,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:34:53,270 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash -122584798, now seen corresponding path program 1 times [2022-11-18 19:34:53,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:53,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417394722] [2022-11-18 19:34:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:53,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:34:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:34:53,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:53,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417394722] [2022-11-18 19:34:53,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417394722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:53,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388942952] [2022-11-18 19:34:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:53,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:53,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:53,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:53,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:34:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:53,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:34:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:34:53,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:34:54,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388942952] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:54,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:54,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 16 [2022-11-18 19:34:54,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977670703] [2022-11-18 19:34:54,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:54,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:54,076 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 16 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-18 19:34:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:54,318 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-11-18 19:34:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:34:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 36 [2022-11-18 19:34:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:54,320 INFO L225 Difference]: With dead ends: 84 [2022-11-18 19:34:54,320 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 19:34:54,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:34:54,321 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:54,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 145 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:34:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 19:34:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-18 19:34:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 11 states have call successors, (11), 4 states have call predecessors, (11), 11 states have return successors, (26), 16 states have call predecessors, (26), 11 states have call successors, (26) [2022-11-18 19:34:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-11-18 19:34:54,337 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 36 [2022-11-18 19:34:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:54,338 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-11-18 19:34:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-18 19:34:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-11-18 19:34:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:34:54,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:54,339 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:34:54,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:54,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:54,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1326914756, now seen corresponding path program 1 times [2022-11-18 19:34:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:54,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92874792] [2022-11-18 19:34:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:54,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:34:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92874792] [2022-11-18 19:34:54,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92874792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942984212] [2022-11-18 19:34:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:54,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:54,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:54,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:54,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:34:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:34:54,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:55,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:56,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942984212] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:56,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:56,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2022-11-18 19:34:56,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475964252] [2022-11-18 19:34:56,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:56,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:34:56,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:56,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:34:56,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:34:56,180 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 39 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-18 19:34:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:57,098 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2022-11-18 19:34:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:34:57,099 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 37 [2022-11-18 19:34:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:57,100 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:34:57,100 INFO L226 Difference]: Without dead ends: 99 [2022-11-18 19:34:57,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=351, Invalid=2199, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:34:57,101 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:57,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 455 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:34:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-18 19:34:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2022-11-18 19:34:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 49 states have internal predecessors, (52), 11 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (23), 14 states have call predecessors, (23), 11 states have call successors, (23) [2022-11-18 19:34:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2022-11-18 19:34:57,126 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 37 [2022-11-18 19:34:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:57,127 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2022-11-18 19:34:57,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 1.90625) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-18 19:34:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2022-11-18 19:34:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:34:57,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:57,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:34:57,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:57,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:34:57,336 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:57,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:57,337 INFO L85 PathProgramCache]: Analyzing trace with hash -238590844, now seen corresponding path program 2 times [2022-11-18 19:34:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:57,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980380209] [2022-11-18 19:34:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:34:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:34:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980380209] [2022-11-18 19:34:57,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980380209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433953032] [2022-11-18 19:34:57,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:57,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:57,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:57,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:34:57,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:57,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:34:57,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:34:57,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:34:58,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433953032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:58,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:58,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 23 [2022-11-18 19:34:58,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387634978] [2022-11-18 19:34:58,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:34:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:34:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:34:58,451 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 23 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-18 19:34:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:58,860 INFO L93 Difference]: Finished difference Result 81 states and 105 transitions. [2022-11-18 19:34:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:34:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37 [2022-11-18 19:34:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:58,861 INFO L225 Difference]: With dead ends: 81 [2022-11-18 19:34:58,862 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 19:34:58,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:34:58,863 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 51 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:58,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 172 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:34:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 19:34:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2022-11-18 19:34:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 10 states have call successors, (10), 4 states have call predecessors, (10), 9 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-18 19:34:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2022-11-18 19:34:58,873 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 37 [2022-11-18 19:34:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:58,874 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2022-11-18 19:34:58,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-18 19:34:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2022-11-18 19:34:58,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 19:34:58,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:58,875 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:34:58,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:59,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:59,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash -124726374, now seen corresponding path program 2 times [2022-11-18 19:34:59,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:59,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584513108] [2022-11-18 19:34:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:34:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:34:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:34:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:34:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:34:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:34:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:59,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584513108] [2022-11-18 19:34:59,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584513108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:59,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553175399] [2022-11-18 19:34:59,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:59,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:59,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:59,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:59,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:34:59,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:59,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:59,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:34:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:34:59,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:35:00,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553175399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:00,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:00,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 24 [2022-11-18 19:35:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461880210] [2022-11-18 19:35:00,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:35:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:35:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:35:00,639 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-18 19:35:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:01,128 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2022-11-18 19:35:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:35:01,129 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 43 [2022-11-18 19:35:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:01,130 INFO L225 Difference]: With dead ends: 76 [2022-11-18 19:35:01,130 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 19:35:01,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:35:01,131 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:01,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 253 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:35:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 19:35:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2022-11-18 19:35:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-18 19:35:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2022-11-18 19:35:01,137 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 43 [2022-11-18 19:35:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:01,138 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2022-11-18 19:35:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.409090909090909) internal successors, (53), 22 states have internal predecessors, (53), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-18 19:35:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2022-11-18 19:35:01,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:35:01,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:01,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:35:01,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:01,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:01,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:01,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1996237866, now seen corresponding path program 3 times [2022-11-18 19:35:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:01,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605517216] [2022-11-18 19:35:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:35:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:35:01,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:01,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605517216] [2022-11-18 19:35:01,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605517216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:01,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245354085] [2022-11-18 19:35:01,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:35:01,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:01,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:01,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:35:01,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:35:01,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:01,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 19:35:01,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:35:02,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:35:03,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245354085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:03,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:03,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 36 [2022-11-18 19:35:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584007756] [2022-11-18 19:35:03,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:03,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:35:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:35:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:35:03,250 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 19:35:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:03,834 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2022-11-18 19:35:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:35:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) Word has length 44 [2022-11-18 19:35:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:03,835 INFO L225 Difference]: With dead ends: 86 [2022-11-18 19:35:03,835 INFO L226 Difference]: Without dead ends: 82 [2022-11-18 19:35:03,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=219, Invalid=1761, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:35:03,837 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 42 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:03,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 326 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:35:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-18 19:35:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 67. [2022-11-18 19:35:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 48 states have internal predecessors, (52), 10 states have call successors, (10), 4 states have call predecessors, (10), 10 states have return successors, (21), 14 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-18 19:35:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2022-11-18 19:35:03,845 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 44 [2022-11-18 19:35:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:03,845 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2022-11-18 19:35:03,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.235294117647059) internal successors, (76), 29 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 19:35:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2022-11-18 19:35:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:35:03,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:03,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:35:03,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 19:35:04,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:35:04,047 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1270773450, now seen corresponding path program 1 times [2022-11-18 19:35:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:04,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297349755] [2022-11-18 19:35:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:35:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:35:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297349755] [2022-11-18 19:35:04,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297349755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:04,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398579267] [2022-11-18 19:35:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:04,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:04,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:04,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:04,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:35:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:04,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:35:04,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:35:04,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:35:05,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398579267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:05,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:05,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 33 [2022-11-18 19:35:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543955899] [2022-11-18 19:35:05,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:05,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:35:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:35:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:35:05,868 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 33 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-18 19:35:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:06,647 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2022-11-18 19:35:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:35:06,647 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) Word has length 44 [2022-11-18 19:35:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:06,648 INFO L225 Difference]: With dead ends: 112 [2022-11-18 19:35:06,648 INFO L226 Difference]: Without dead ends: 108 [2022-11-18 19:35:06,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 19:35:06,650 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:06,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 420 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:35:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-18 19:35:06,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2022-11-18 19:35:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 50 states have internal predecessors, (55), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (24), 16 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-18 19:35:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2022-11-18 19:35:06,660 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 44 [2022-11-18 19:35:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:06,660 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2022-11-18 19:35:06,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-18 19:35:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2022-11-18 19:35:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:35:06,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:06,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 19:35:06,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:06,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:35:06,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:06,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash 132450678, now seen corresponding path program 2 times [2022-11-18 19:35:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:06,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344461704] [2022-11-18 19:35:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:35:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:35:07,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:07,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344461704] [2022-11-18 19:35:07,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344461704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:07,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690041935] [2022-11-18 19:35:07,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:35:07,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:07,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:07,203 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:07,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:35:07,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:35:07,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:07,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:35:07,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:35:07,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:35:08,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690041935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:08,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:08,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 22 [2022-11-18 19:35:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907380240] [2022-11-18 19:35:08,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:35:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:35:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:35:08,253 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2022-11-18 19:35:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:08,561 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2022-11-18 19:35:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:35:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) Word has length 44 [2022-11-18 19:35:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:08,562 INFO L225 Difference]: With dead ends: 99 [2022-11-18 19:35:08,562 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 19:35:08,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:35:08,563 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:08,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 261 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:35:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 19:35:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-11-18 19:35:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 10 states have call successors, (10), 4 states have call predecessors, (10), 13 states have return successors, (30), 19 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-18 19:35:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2022-11-18 19:35:08,574 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 44 [2022-11-18 19:35:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:08,574 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2022-11-18 19:35:08,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 19 states have internal predecessors, (57), 9 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2022-11-18 19:35:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-11-18 19:35:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 19:35:08,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:08,576 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-11-18 19:35:08,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:08,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:35:08,781 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 815065250, now seen corresponding path program 3 times [2022-11-18 19:35:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:08,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482668306] [2022-11-18 19:35:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:08,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:09,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:09,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482668306] [2022-11-18 19:35:09,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482668306] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:09,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525673688] [2022-11-18 19:35:09,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:35:09,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:09,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:09,226 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:09,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:35:09,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:35:09,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:09,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:35:09,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:35:09,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:35:11,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525673688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:11,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:11,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 44 [2022-11-18 19:35:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572849648] [2022-11-18 19:35:11,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:11,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:35:11,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:35:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:35:11,949 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 44 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 32 states have internal predecessors, (89), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-18 19:35:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:12,944 INFO L93 Difference]: Finished difference Result 140 states and 182 transitions. [2022-11-18 19:35:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:35:12,945 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 32 states have internal predecessors, (89), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) Word has length 52 [2022-11-18 19:35:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:12,946 INFO L225 Difference]: With dead ends: 140 [2022-11-18 19:35:12,946 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 19:35:12,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=326, Invalid=2980, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:35:12,948 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 59 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:12,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 512 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:35:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 19:35:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 86. [2022-11-18 19:35:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.1) internal successors, (66), 58 states have internal predecessors, (66), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (36), 23 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 19:35:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2022-11-18 19:35:12,960 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 52 [2022-11-18 19:35:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:12,961 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2022-11-18 19:35:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 32 states have internal predecessors, (89), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-18 19:35:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2022-11-18 19:35:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 19:35:12,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:12,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-11-18 19:35:12,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 19:35:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:35:13,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 850048834, now seen corresponding path program 4 times [2022-11-18 19:35:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:13,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943652795] [2022-11-18 19:35:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:35:13,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:13,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943652795] [2022-11-18 19:35:13,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943652795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:13,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080544439] [2022-11-18 19:35:13,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:35:13,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:13,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:13,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:13,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:35:13,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:35:13,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:13,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:35:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:14,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:35:15,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080544439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:15,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:15,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 36 [2022-11-18 19:35:15,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624920602] [2022-11-18 19:35:15,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:15,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:35:15,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:15,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:35:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:35:15,628 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2022-11-18 19:35:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:16,444 INFO L93 Difference]: Finished difference Result 127 states and 171 transitions. [2022-11-18 19:35:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:35:16,444 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) Word has length 52 [2022-11-18 19:35:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:16,445 INFO L225 Difference]: With dead ends: 127 [2022-11-18 19:35:16,446 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 19:35:16,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=335, Invalid=2215, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:35:16,447 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:16,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 323 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:35:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 19:35:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 59. [2022-11-18 19:35:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 43 states have internal predecessors, (47), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (15), 11 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-18 19:35:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-11-18 19:35:16,455 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 52 [2022-11-18 19:35:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:16,458 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-11-18 19:35:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.303030303030303) internal successors, (76), 27 states have internal predecessors, (76), 13 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2022-11-18 19:35:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-11-18 19:35:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 19:35:16,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:16,462 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:16,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:16,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:16,674 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:16,674 INFO L85 PathProgramCache]: Analyzing trace with hash 861262790, now seen corresponding path program 4 times [2022-11-18 19:35:16,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:16,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988570357] [2022-11-18 19:35:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:16,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:35:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:17,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988570357] [2022-11-18 19:35:17,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988570357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:17,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297927935] [2022-11-18 19:35:17,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:35:17,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:17,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:17,071 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:17,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:35:17,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:35:17,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:35:17,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:17,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:35:18,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297927935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:18,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:18,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 27 [2022-11-18 19:35:18,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478269797] [2022-11-18 19:35:18,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:18,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:35:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:18,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:35:18,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:35:18,624 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-18 19:35:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:19,120 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2022-11-18 19:35:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:35:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) Word has length 51 [2022-11-18 19:35:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:19,122 INFO L225 Difference]: With dead ends: 89 [2022-11-18 19:35:19,122 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 19:35:19,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:35:19,124 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 67 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:19,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 414 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:35:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 19:35:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2022-11-18 19:35:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 10 states have call successors, (10), 4 states have call predecessors, (10), 11 states have return successors, (22), 15 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-18 19:35:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2022-11-18 19:35:19,135 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 51 [2022-11-18 19:35:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:19,135 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2022-11-18 19:35:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 23 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (14), 7 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-18 19:35:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2022-11-18 19:35:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 19:35:19,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:19,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:35:19,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:19,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:19,337 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2103225754, now seen corresponding path program 5 times [2022-11-18 19:35:19,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:19,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087812141] [2022-11-18 19:35:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:35:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:19,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:19,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087812141] [2022-11-18 19:35:19,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087812141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:19,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608420231] [2022-11-18 19:35:19,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:35:19,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:19,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:19,767 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:19,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:35:19,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:35:19,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:35:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:20,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:35:21,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608420231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:21,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:21,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 29 [2022-11-18 19:35:21,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611422164] [2022-11-18 19:35:21,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:21,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:35:21,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:35:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:35:21,400 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 29 states, 28 states have (on average 2.5) internal successors, (70), 24 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-18 19:35:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:21,882 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2022-11-18 19:35:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:35:21,883 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 24 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) Word has length 51 [2022-11-18 19:35:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:21,884 INFO L225 Difference]: With dead ends: 97 [2022-11-18 19:35:21,884 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 19:35:21,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:35:21,885 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:21,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 423 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:35:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 19:35:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73. [2022-11-18 19:35:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 16 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-18 19:35:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2022-11-18 19:35:21,894 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 51 [2022-11-18 19:35:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:21,894 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2022-11-18 19:35:21,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.5) internal successors, (70), 24 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (14), 8 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-18 19:35:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2022-11-18 19:35:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 19:35:21,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:21,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:35:21,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:22,101 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash -262469082, now seen corresponding path program 6 times [2022-11-18 19:35:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:22,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166462068] [2022-11-18 19:35:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:35:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:35:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:22,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166462068] [2022-11-18 19:35:22,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166462068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:22,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654469902] [2022-11-18 19:35:22,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:35:22,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:22,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:22,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:22,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:35:22,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:35:22,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:22,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:35:22,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:35:22,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:35:24,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654469902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:24,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:24,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 34 [2022-11-18 19:35:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677682473] [2022-11-18 19:35:24,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:24,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:35:24,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:35:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:35:24,085 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2022-11-18 19:35:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:24,640 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2022-11-18 19:35:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:35:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) Word has length 51 [2022-11-18 19:35:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:24,644 INFO L225 Difference]: With dead ends: 91 [2022-11-18 19:35:24,644 INFO L226 Difference]: Without dead ends: 82 [2022-11-18 19:35:24,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 19:35:24,645 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:24,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 357 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:35:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-18 19:35:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2022-11-18 19:35:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (24), 17 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-18 19:35:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2022-11-18 19:35:24,653 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 51 [2022-11-18 19:35:24,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:24,653 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2022-11-18 19:35:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 13 states have call successors, (16) [2022-11-18 19:35:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2022-11-18 19:35:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:24,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:24,655 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2022-11-18 19:35:24,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:24,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:35:24,860 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:24,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1972765050, now seen corresponding path program 7 times [2022-11-18 19:35:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:24,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554810539] [2022-11-18 19:35:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:24,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:35:25,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:25,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554810539] [2022-11-18 19:35:25,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554810539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:25,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683140909] [2022-11-18 19:35:25,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:35:25,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:25,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:25,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:25,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:35:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:25,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:35:25,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:35:25,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:35:27,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683140909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:27,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:27,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 28 [2022-11-18 19:35:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375571251] [2022-11-18 19:35:27,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:35:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:35:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:35:27,511 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:35:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:27,999 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2022-11-18 19:35:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:35:28,000 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) Word has length 59 [2022-11-18 19:35:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:28,001 INFO L225 Difference]: With dead ends: 104 [2022-11-18 19:35:28,001 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 19:35:28,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:35:28,002 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:28,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 380 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:35:28,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 19:35:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2022-11-18 19:35:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 10 states have call successors, (10), 4 states have call predecessors, (10), 14 states have return successors, (30), 20 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-18 19:35:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-11-18 19:35:28,014 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 59 [2022-11-18 19:35:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:28,015 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-11-18 19:35:28,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 23 states have internal predecessors, (71), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (17), 8 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:35:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-11-18 19:35:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:28,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:28,016 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:28,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:28,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:28,222 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash 334535194, now seen corresponding path program 5 times [2022-11-18 19:35:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:28,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904663316] [2022-11-18 19:35:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:35:28,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:28,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904663316] [2022-11-18 19:35:28,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904663316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:28,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793945862] [2022-11-18 19:35:28,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:35:28,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:28,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:28,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:28,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:35:28,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:35:28,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:28,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:35:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:35:29,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:35:31,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793945862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:31,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:31,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 45 [2022-11-18 19:35:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40777408] [2022-11-18 19:35:31,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:31,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 19:35:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 19:35:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:35:31,854 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 34 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-18 19:35:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:32,758 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2022-11-18 19:35:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:35:32,759 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 34 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 59 [2022-11-18 19:35:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:32,760 INFO L225 Difference]: With dead ends: 116 [2022-11-18 19:35:32,760 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:35:32,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=310, Invalid=2660, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 19:35:32,762 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 47 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:32,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 575 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:35:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:35:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 84. [2022-11-18 19:35:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 21 states have call predecessors, (33), 10 states have call successors, (33) [2022-11-18 19:35:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-11-18 19:35:32,771 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 59 [2022-11-18 19:35:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:32,771 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-11-18 19:35:32,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 34 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-18 19:35:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-11-18 19:35:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:32,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:32,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2022-11-18 19:35:32,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-18 19:35:32,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:35:32,984 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash 12091098, now seen corresponding path program 8 times [2022-11-18 19:35:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117484708] [2022-11-18 19:35:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:35:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:33,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117484708] [2022-11-18 19:35:33,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117484708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:33,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294622660] [2022-11-18 19:35:33,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:35:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:33,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:33,461 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:33,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:35:33,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:35:33,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:33,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:35:33,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:35:33,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:35:35,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294622660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:35,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:35,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 30 [2022-11-18 19:35:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952702346] [2022-11-18 19:35:35,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:35:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:35:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:35:35,568 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 30 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 24 states have internal predecessors, (74), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:35:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:36,135 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2022-11-18 19:35:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:35:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 24 states have internal predecessors, (74), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) Word has length 59 [2022-11-18 19:35:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:36,136 INFO L225 Difference]: With dead ends: 113 [2022-11-18 19:35:36,137 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 19:35:36,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 106 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:35:36,138 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 52 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:36,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 447 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:35:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 19:35:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2022-11-18 19:35:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (33), 21 states have call predecessors, (33), 10 states have call successors, (33) [2022-11-18 19:35:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-11-18 19:35:36,157 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 59 [2022-11-18 19:35:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:36,158 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-11-18 19:35:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 24 states have internal predecessors, (74), 12 states have call successors, (15), 1 states have call predecessors, (15), 9 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 19:35:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-11-18 19:35:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:36,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:36,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2022-11-18 19:35:36,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:36,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:35:36,366 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:36,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1626138758, now seen corresponding path program 9 times [2022-11-18 19:35:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:36,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569959013] [2022-11-18 19:35:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:35:36,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:36,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569959013] [2022-11-18 19:35:36,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569959013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:36,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865111174] [2022-11-18 19:35:36,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:35:36,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:36,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:36,910 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:36,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:35:37,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:35:37,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:37,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:35:37,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 19:35:37,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:45,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865111174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:45,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:35:45,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 33 [2022-11-18 19:35:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765289880] [2022-11-18 19:35:45,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:35:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:35:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1831, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:35:45,042 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 33 states, 29 states have (on average 2.103448275862069) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-18 19:35:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:46,098 INFO L93 Difference]: Finished difference Result 151 states and 200 transitions. [2022-11-18 19:35:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:35:46,099 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 2.103448275862069) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 59 [2022-11-18 19:35:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:46,100 INFO L225 Difference]: With dead ends: 151 [2022-11-18 19:35:46,100 INFO L226 Difference]: Without dead ends: 147 [2022-11-18 19:35:46,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=293, Invalid=2899, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 19:35:46,102 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:46,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 616 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:35:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-18 19:35:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 101. [2022-11-18 19:35:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 68 states have internal predecessors, (76), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (47), 28 states have call predecessors, (47), 10 states have call successors, (47) [2022-11-18 19:35:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2022-11-18 19:35:46,114 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 59 [2022-11-18 19:35:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:46,115 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2022-11-18 19:35:46,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 2.103448275862069) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-18 19:35:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2022-11-18 19:35:46,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:46,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:46,116 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2022-11-18 19:35:46,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:46,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:35:46,322 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1786558534, now seen corresponding path program 10 times [2022-11-18 19:35:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:46,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299565142] [2022-11-18 19:35:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:35:46,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:46,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299565142] [2022-11-18 19:35:46,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299565142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:46,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415002993] [2022-11-18 19:35:46,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:35:46,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:46,832 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:46,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:35:47,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:35:47,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:47,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:35:47,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:35:47,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:35:50,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415002993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:50,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:50,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 22] total 46 [2022-11-18 19:35:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251780850] [2022-11-18 19:35:50,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 19:35:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 19:35:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1906, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 19:35:50,335 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 46 states, 42 states have (on average 2.142857142857143) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-18 19:35:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:51,555 INFO L93 Difference]: Finished difference Result 160 states and 207 transitions. [2022-11-18 19:35:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:35:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 2.142857142857143) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) Word has length 59 [2022-11-18 19:35:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:51,557 INFO L225 Difference]: With dead ends: 160 [2022-11-18 19:35:51,557 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 19:35:51,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=411, Invalid=3249, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 19:35:51,559 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 48 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:51,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 759 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:35:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 19:35:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 98. [2022-11-18 19:35:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.088235294117647) internal successors, (74), 66 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 27 states have call predecessors, (44), 10 states have call successors, (44) [2022-11-18 19:35:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2022-11-18 19:35:51,570 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 59 [2022-11-18 19:35:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:51,571 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2022-11-18 19:35:51,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 2.142857142857143) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (21), 14 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-18 19:35:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2022-11-18 19:35:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:35:51,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:51,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2022-11-18 19:35:51,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:51,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:35:51,778 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash 547734810, now seen corresponding path program 11 times [2022-11-18 19:35:51,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:51,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332942561] [2022-11-18 19:35:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:35:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:35:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:52,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332942561] [2022-11-18 19:35:52,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332942561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:52,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83132241] [2022-11-18 19:35:52,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:35:52,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:52,305 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:52,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:35:52,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:35:52,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:52,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:35:52,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:35:52,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:35:54,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83132241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:54,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:54,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 22] total 36 [2022-11-18 19:35:54,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619536552] [2022-11-18 19:35:54,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:54,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:35:54,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:35:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:35:54,462 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 36 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 29 states have internal predecessors, (78), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (16), 10 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-18 19:35:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:55,076 INFO L93 Difference]: Finished difference Result 156 states and 210 transitions. [2022-11-18 19:35:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:35:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 29 states have internal predecessors, (78), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (16), 10 states have call predecessors, (16), 14 states have call successors, (16) Word has length 59 [2022-11-18 19:35:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:55,078 INFO L225 Difference]: With dead ends: 156 [2022-11-18 19:35:55,079 INFO L226 Difference]: Without dead ends: 152 [2022-11-18 19:35:55,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 100 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=1894, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:35:55,080 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:55,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 412 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:35:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-18 19:35:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 107. [2022-11-18 19:35:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 72 states have internal predecessors, (80), 10 states have call successors, (10), 4 states have call predecessors, (10), 22 states have return successors, (53), 30 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-18 19:35:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2022-11-18 19:35:55,093 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 59 [2022-11-18 19:35:55,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:55,093 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2022-11-18 19:35:55,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 29 states have internal predecessors, (78), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (16), 10 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-18 19:35:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2022-11-18 19:35:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 19:35:55,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:55,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:55,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-18 19:35:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:35:55,301 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash 789094822, now seen corresponding path program 12 times [2022-11-18 19:35:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:55,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238197837] [2022-11-18 19:35:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:55,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:35:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:35:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:35:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:35:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 19:35:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:55,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238197837] [2022-11-18 19:35:55,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238197837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:55,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786573155] [2022-11-18 19:35:55,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:35:55,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:55,919 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:55,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:35:56,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:35:56,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:56,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:35:56,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 14 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 19:35:56,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:35:59,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786573155] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:59,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:59,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 25] total 47 [2022-11-18 19:35:59,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287730264] [2022-11-18 19:35:59,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:59,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 19:35:59,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:59,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 19:35:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1998, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:35:59,630 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand has 47 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 36 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (22), 14 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-18 19:36:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:01,065 INFO L93 Difference]: Finished difference Result 180 states and 244 transitions. [2022-11-18 19:36:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:36:01,065 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 36 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (22), 14 states have call predecessors, (22), 18 states have call successors, (22) Word has length 67 [2022-11-18 19:36:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:01,067 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:36:01,067 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:36:01,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 111 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=506, Invalid=3654, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 19:36:01,069 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 88 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:01,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 637 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:36:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:36:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 108. [2022-11-18 19:36:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 75 states have (on average 1.08) internal successors, (81), 72 states have internal predecessors, (81), 10 states have call successors, (10), 4 states have call predecessors, (10), 22 states have return successors, (53), 31 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-18 19:36:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2022-11-18 19:36:01,083 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 67 [2022-11-18 19:36:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:01,083 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2022-11-18 19:36:01,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 36 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (22), 14 states have call predecessors, (22), 18 states have call successors, (22) [2022-11-18 19:36:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2022-11-18 19:36:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 19:36:01,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:01,085 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 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] [2022-11-18 19:36:01,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:01,291 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:01,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1906616390, now seen corresponding path program 13 times [2022-11-18 19:36:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:01,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871105110] [2022-11-18 19:36:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:36:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:36:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:01,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871105110] [2022-11-18 19:36:01,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871105110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:01,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085794227] [2022-11-18 19:36:01,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:36:01,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:01,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:01,927 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:01,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:36:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:02,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 19:36:02,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:36:02,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:36:05,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085794227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:05,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:05,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 25] total 44 [2022-11-18 19:36:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990130866] [2022-11-18 19:36:05,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:36:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:36:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:36:05,441 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 34 states have internal predecessors, (90), 18 states have call successors, (20), 1 states have call predecessors, (20), 11 states have return successors, (24), 13 states have call predecessors, (24), 18 states have call successors, (24) [2022-11-18 19:36:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:06,629 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2022-11-18 19:36:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:36:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 34 states have internal predecessors, (90), 18 states have call successors, (20), 1 states have call predecessors, (20), 11 states have return successors, (24), 13 states have call predecessors, (24), 18 states have call successors, (24) Word has length 67 [2022-11-18 19:36:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:06,631 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:36:06,632 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:36:06,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 114 SyntacticMatches, 11 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=468, Invalid=3314, Unknown=0, NotChecked=0, Total=3782 [2022-11-18 19:36:06,634 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 73 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:06,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 658 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:36:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:36:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 104. [2022-11-18 19:36:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 70 states have internal predecessors, (78), 10 states have call successors, (10), 4 states have call predecessors, (10), 21 states have return successors, (50), 29 states have call predecessors, (50), 10 states have call successors, (50) [2022-11-18 19:36:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 138 transitions. [2022-11-18 19:36:06,647 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 138 transitions. Word has length 67 [2022-11-18 19:36:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:06,648 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 138 transitions. [2022-11-18 19:36:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 34 states have internal predecessors, (90), 18 states have call successors, (20), 1 states have call predecessors, (20), 11 states have return successors, (24), 13 states have call predecessors, (24), 18 states have call successors, (24) [2022-11-18 19:36:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 138 transitions. [2022-11-18 19:36:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 19:36:06,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:06,650 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 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] [2022-11-18 19:36:06,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:06,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:06,856 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1155297274, now seen corresponding path program 14 times [2022-11-18 19:36:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:06,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362890780] [2022-11-18 19:36:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:36:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 19:36:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:07,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362890780] [2022-11-18 19:36:07,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362890780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:07,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850915795] [2022-11-18 19:36:07,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:07,493 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:07,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:36:07,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:07,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:07,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 19:36:07,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:36:08,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:36:10,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850915795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:10,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:10,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 25] total 48 [2022-11-18 19:36:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506815223] [2022-11-18 19:36:10,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:10,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 19:36:10,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 19:36:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 19:36:10,980 INFO L87 Difference]: Start difference. First operand 104 states and 138 transitions. Second operand has 48 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 35 states have internal predecessors, (95), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-18 19:36:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:11,900 INFO L93 Difference]: Finished difference Result 174 states and 238 transitions. [2022-11-18 19:36:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:36:11,900 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 35 states have internal predecessors, (95), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) Word has length 67 [2022-11-18 19:36:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:11,902 INFO L225 Difference]: With dead ends: 174 [2022-11-18 19:36:11,902 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:36:11,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 110 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=389, Invalid=3393, Unknown=0, NotChecked=0, Total=3782 [2022-11-18 19:36:11,904 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 60 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:11,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 604 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:36:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:36:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 96. [2022-11-18 19:36:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (44), 25 states have call predecessors, (44), 10 states have call successors, (44) [2022-11-18 19:36:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2022-11-18 19:36:11,917 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 67 [2022-11-18 19:36:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:11,918 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2022-11-18 19:36:11,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 35 states have internal predecessors, (95), 18 states have call successors, (19), 1 states have call predecessors, (19), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-18 19:36:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2022-11-18 19:36:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 19:36:11,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:11,920 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:11,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:12,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 19:36:12,126 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:12,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:12,126 INFO L85 PathProgramCache]: Analyzing trace with hash -37775706, now seen corresponding path program 15 times [2022-11-18 19:36:12,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:12,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107680934] [2022-11-18 19:36:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:12,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:36:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:36:12,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:12,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107680934] [2022-11-18 19:36:12,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107680934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:12,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360379938] [2022-11-18 19:36:12,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:36:12,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:12,755 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:12,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:36:13,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:36:13,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:13,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:36:13,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 19:36:13,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:36:16,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360379938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:16,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:16,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 25] total 52 [2022-11-18 19:36:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817005107] [2022-11-18 19:36:16,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 19:36:16,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 19:36:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2478, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 19:36:16,904 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand has 52 states, 49 states have (on average 2.122448979591837) internal successors, (104), 38 states have internal predecessors, (104), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-18 19:36:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:18,537 INFO L93 Difference]: Finished difference Result 172 states and 231 transitions. [2022-11-18 19:36:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:36:18,537 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 2.122448979591837) internal successors, (104), 38 states have internal predecessors, (104), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) Word has length 67 [2022-11-18 19:36:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:18,539 INFO L225 Difference]: With dead ends: 172 [2022-11-18 19:36:18,539 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 19:36:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=464, Invalid=4506, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 19:36:18,540 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:18,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 624 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:36:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 19:36:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 63. [2022-11-18 19:36:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 45 states have internal predecessors, (50), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (16), 13 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-18 19:36:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2022-11-18 19:36:18,551 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 67 [2022-11-18 19:36:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:18,551 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-11-18 19:36:18,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 2.122448979591837) internal successors, (104), 38 states have internal predecessors, (104), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-18 19:36:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2022-11-18 19:36:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:36:18,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:18,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:18,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:18,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:18,769 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -835098444, now seen corresponding path program 6 times [2022-11-18 19:36:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:18,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640226876] [2022-11-18 19:36:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:36:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:36:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640226876] [2022-11-18 19:36:19,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640226876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063489092] [2022-11-18 19:36:19,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:36:19,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:19,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:19,253 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:19,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:36:19,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:36:19,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:19,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 19:36:19,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:36:19,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:36:21,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063489092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:21,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:21,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 40 [2022-11-18 19:36:21,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534358343] [2022-11-18 19:36:21,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:36:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:36:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:36:21,409 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-18 19:36:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:22,007 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-11-18 19:36:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:36:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) Word has length 58 [2022-11-18 19:36:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:22,009 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:36:22,009 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:36:22,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 95 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=272, Invalid=2178, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:36:22,010 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 51 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:22,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 365 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:36:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:36:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2022-11-18 19:36:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 47 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 10 states have return successors, (18), 14 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-18 19:36:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2022-11-18 19:36:22,017 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 58 [2022-11-18 19:36:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2022-11-18 19:36:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-18 19:36:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2022-11-18 19:36:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:36:22,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:22,018 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:22,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:22,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:22,225 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:22,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash -551668204, now seen corresponding path program 16 times [2022-11-18 19:36:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:22,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042484389] [2022-11-18 19:36:22,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:36:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:36:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042484389] [2022-11-18 19:36:22,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042484389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:22,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712579381] [2022-11-18 19:36:22,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:36:22,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:22,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:22,780 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:22,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:36:23,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:36:23,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:23,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 19:36:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:36:23,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:36:25,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712579381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:25,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:25,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 40 [2022-11-18 19:36:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867857744] [2022-11-18 19:36:25,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:25,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:36:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:36:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:36:25,104 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-18 19:36:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:25,699 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2022-11-18 19:36:25,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:36:25,700 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) Word has length 58 [2022-11-18 19:36:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:25,701 INFO L225 Difference]: With dead ends: 89 [2022-11-18 19:36:25,701 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 19:36:25,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 95 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=274, Invalid=2176, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:36:25,702 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:25,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 424 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:36:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 19:36:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-11-18 19:36:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 9 states have call successors, (9), 4 states have call predecessors, (9), 11 states have return successors, (20), 15 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-18 19:36:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2022-11-18 19:36:25,708 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 58 [2022-11-18 19:36:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:25,709 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2022-11-18 19:36:25,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.342857142857143) internal successors, (82), 33 states have internal predecessors, (82), 16 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (19), 11 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-18 19:36:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2022-11-18 19:36:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:36:25,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:25,710 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:25,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 19:36:25,916 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 720804832, now seen corresponding path program 7 times [2022-11-18 19:36:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:25,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949062401] [2022-11-18 19:36:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:36:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:36:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:26,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949062401] [2022-11-18 19:36:26,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949062401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:26,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309004517] [2022-11-18 19:36:26,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:36:26,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:26,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:26,439 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:26,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:36:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:26,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 19:36:26,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:36:27,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:36:29,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309004517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:29,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:29,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 23] total 34 [2022-11-18 19:36:29,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755365443] [2022-11-18 19:36:29,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:29,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:36:29,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:36:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:36:29,306 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 28 states have internal predecessors, (81), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-18 19:36:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:29,884 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2022-11-18 19:36:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:36:29,884 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 28 states have internal predecessors, (81), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) Word has length 66 [2022-11-18 19:36:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:29,885 INFO L225 Difference]: With dead ends: 101 [2022-11-18 19:36:29,885 INFO L226 Difference]: Without dead ends: 97 [2022-11-18 19:36:29,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 116 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=1764, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:36:29,886 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 83 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:29,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 502 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:36:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-18 19:36:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2022-11-18 19:36:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 58 states have internal predecessors, (62), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (29), 19 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 19:36:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2022-11-18 19:36:29,894 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 66 [2022-11-18 19:36:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:29,894 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2022-11-18 19:36:29,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 28 states have internal predecessors, (81), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (20), 10 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-18 19:36:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2022-11-18 19:36:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:36:29,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:29,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:29,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-18 19:36:30,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:30,103 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:30,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash 590358656, now seen corresponding path program 17 times [2022-11-18 19:36:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:30,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048639322] [2022-11-18 19:36:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:30,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:36:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 19:36:30,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:30,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048639322] [2022-11-18 19:36:30,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048639322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444651972] [2022-11-18 19:36:30,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:36:30,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:30,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:30,680 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:30,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:36:31,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:36:31,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:31,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 19:36:31,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:36:31,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:36:33,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444651972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:33,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:33,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 42 [2022-11-18 19:36:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470803471] [2022-11-18 19:36:33,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:33,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 19:36:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 19:36:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 19:36:33,482 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 42 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-18 19:36:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:34,248 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2022-11-18 19:36:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:36:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) Word has length 66 [2022-11-18 19:36:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:34,249 INFO L225 Difference]: With dead ends: 100 [2022-11-18 19:36:34,250 INFO L226 Difference]: Without dead ends: 91 [2022-11-18 19:36:34,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 110 SyntacticMatches, 13 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=288, Invalid=2468, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:36:34,251 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 62 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:34,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 523 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:36:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-18 19:36:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2022-11-18 19:36:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 58 states have internal predecessors, (62), 10 states have call successors, (10), 4 states have call predecessors, (10), 15 states have return successors, (29), 19 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 19:36:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2022-11-18 19:36:34,259 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 66 [2022-11-18 19:36:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:34,260 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2022-11-18 19:36:34,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 16 states have call successors, (18), 1 states have call predecessors, (18), 11 states have return successors, (22), 13 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-18 19:36:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2022-11-18 19:36:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:36:34,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:34,261 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:34,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:34,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:34,467 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:34,468 INFO L85 PathProgramCache]: Analyzing trace with hash 485380736, now seen corresponding path program 18 times [2022-11-18 19:36:34,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:34,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137943165] [2022-11-18 19:36:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:34,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:36:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 19:36:35,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:35,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137943165] [2022-11-18 19:36:35,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137943165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:35,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317732136] [2022-11-18 19:36:35,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:36:35,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:35,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:35,059 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:35,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:36:35,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:36:35,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:35,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 19:36:35,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 19:36:35,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:36:38,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317732136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:38,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:38,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 45 [2022-11-18 19:36:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533471396] [2022-11-18 19:36:38,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:38,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 19:36:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 19:36:38,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1815, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:36:38,067 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 45 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 37 states have internal predecessors, (91), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 12 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-18 19:36:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:38,983 INFO L93 Difference]: Finished difference Result 133 states and 172 transitions. [2022-11-18 19:36:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:36:38,984 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 37 states have internal predecessors, (91), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 12 states have call predecessors, (22), 17 states have call successors, (22) Word has length 66 [2022-11-18 19:36:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:38,985 INFO L225 Difference]: With dead ends: 133 [2022-11-18 19:36:38,985 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 19:36:38,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:36:38,986 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 53 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:38,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 713 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:36:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 19:36:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2022-11-18 19:36:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.09375) internal successors, (70), 66 states have internal predecessors, (70), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (40), 23 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-18 19:36:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2022-11-18 19:36:38,997 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 66 [2022-11-18 19:36:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:38,998 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2022-11-18 19:36:38,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 37 states have internal predecessors, (91), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 12 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-18 19:36:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2022-11-18 19:36:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:36:38,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:38,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:39,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:39,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 19:36:39,206 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash 354934560, now seen corresponding path program 19 times [2022-11-18 19:36:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:39,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766687647] [2022-11-18 19:36:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:36:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,819 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:36:39,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:39,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766687647] [2022-11-18 19:36:39,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766687647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:39,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48830402] [2022-11-18 19:36:39,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:36:39,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:39,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:39,824 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:39,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 19:36:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-18 19:36:40,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:36:40,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:36:41,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48830402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:41,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:41,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 21] total 32 [2022-11-18 19:36:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142145966] [2022-11-18 19:36:41,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:36:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:36:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:36:41,929 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 32 states, 30 states have (on average 2.433333333333333) internal successors, (73), 27 states have internal predecessors, (73), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-18 19:36:42,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:42,609 INFO L93 Difference]: Finished difference Result 121 states and 159 transitions. [2022-11-18 19:36:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:36:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.433333333333333) internal successors, (73), 27 states have internal predecessors, (73), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) Word has length 66 [2022-11-18 19:36:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:42,610 INFO L225 Difference]: With dead ends: 121 [2022-11-18 19:36:42,610 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:36:42,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:36:42,611 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:42,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 341 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:36:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:36:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2022-11-18 19:36:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 68 states have internal predecessors, (72), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (42), 24 states have call predecessors, (42), 10 states have call successors, (42) [2022-11-18 19:36:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2022-11-18 19:36:42,622 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 66 [2022-11-18 19:36:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:42,622 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2022-11-18 19:36:42,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.433333333333333) internal successors, (73), 27 states have internal predecessors, (73), 11 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-18 19:36:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2022-11-18 19:36:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:36:42,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:42,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:42,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:42,832 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:42,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 959666752, now seen corresponding path program 20 times [2022-11-18 19:36:42,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:42,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650110689] [2022-11-18 19:36:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:36:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:36:43,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:43,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650110689] [2022-11-18 19:36:43,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650110689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:43,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662989987] [2022-11-18 19:36:43,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:43,359 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:43,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 19:36:43,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:43,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:43,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:36:43,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:36:44,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:36:47,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662989987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:47,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:47,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 24] total 44 [2022-11-18 19:36:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831650810] [2022-11-18 19:36:47,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:47,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:36:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:36:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1739, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:36:47,420 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-18 19:36:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:48,275 INFO L93 Difference]: Finished difference Result 148 states and 193 transitions. [2022-11-18 19:36:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:36:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) Word has length 66 [2022-11-18 19:36:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:48,276 INFO L225 Difference]: With dead ends: 148 [2022-11-18 19:36:48,277 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 19:36:48,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 110 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 19:36:48,278 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 81 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:48,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 535 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:36:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 19:36:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 111. [2022-11-18 19:36:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 76 states have internal predecessors, (82), 10 states have call successors, (10), 4 states have call predecessors, (10), 24 states have return successors, (53), 30 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-18 19:36:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2022-11-18 19:36:48,290 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 145 transitions. Word has length 66 [2022-11-18 19:36:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:48,290 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 145 transitions. [2022-11-18 19:36:48,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 35 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-18 19:36:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 145 transitions. [2022-11-18 19:36:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:36:48,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:48,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:48,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:48,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 19:36:48,499 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:48,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 724242656, now seen corresponding path program 21 times [2022-11-18 19:36:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:48,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725980405] [2022-11-18 19:36:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:48,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:36:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:36:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:49,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725980405] [2022-11-18 19:36:49,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725980405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:49,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168476912] [2022-11-18 19:36:49,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:36:49,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:49,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:49,014 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:49,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 19:36:49,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:36:49,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:49,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 19:36:49,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:36:49,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:36:52,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168476912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:52,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:52,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 23] total 36 [2022-11-18 19:36:52,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045797528] [2022-11-18 19:36:52,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:52,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:36:52,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:36:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1154, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:36:52,059 INFO L87 Difference]: Start difference. First operand 111 states and 145 transitions. Second operand has 36 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 29 states have internal predecessors, (83), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (20), 11 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-18 19:36:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:52,766 INFO L93 Difference]: Finished difference Result 139 states and 181 transitions. [2022-11-18 19:36:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:36:52,767 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 29 states have internal predecessors, (83), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (20), 11 states have call predecessors, (20), 14 states have call successors, (20) Word has length 66 [2022-11-18 19:36:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:52,768 INFO L225 Difference]: With dead ends: 139 [2022-11-18 19:36:52,768 INFO L226 Difference]: Without dead ends: 135 [2022-11-18 19:36:52,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 116 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=1936, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:36:52,769 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 51 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:52,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 573 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:36:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-18 19:36:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2022-11-18 19:36:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 78 states have internal predecessors, (85), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (55), 32 states have call predecessors, (55), 10 states have call successors, (55) [2022-11-18 19:36:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 150 transitions. [2022-11-18 19:36:52,782 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 150 transitions. Word has length 66 [2022-11-18 19:36:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 150 transitions. [2022-11-18 19:36:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 29 states have internal predecessors, (83), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (20), 11 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-18 19:36:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 150 transitions. [2022-11-18 19:36:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:36:52,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:52,784 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:52,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:52,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 19:36:52,991 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:52,991 INFO L85 PathProgramCache]: Analyzing trace with hash -599965996, now seen corresponding path program 22 times [2022-11-18 19:36:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:52,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397002618] [2022-11-18 19:36:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:36:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:36:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397002618] [2022-11-18 19:36:53,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397002618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:53,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139572154] [2022-11-18 19:36:53,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:36:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:53,611 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 19:36:54,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:36:54,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:54,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:36:54,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 19:36:54,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:36:57,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139572154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:57,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:36:57,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 35 [2022-11-18 19:36:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398069795] [2022-11-18 19:36:57,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:57,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:36:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:36:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:36:57,421 INFO L87 Difference]: Start difference. First operand 115 states and 150 transitions. Second operand has 35 states, 34 states have (on average 2.4705882352941178) internal successors, (84), 28 states have internal predecessors, (84), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2022-11-18 19:36:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:58,098 INFO L93 Difference]: Finished difference Result 148 states and 192 transitions. [2022-11-18 19:36:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:36:58,098 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.4705882352941178) internal successors, (84), 28 states have internal predecessors, (84), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) Word has length 74 [2022-11-18 19:36:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:58,100 INFO L225 Difference]: With dead ends: 148 [2022-11-18 19:36:58,100 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 19:36:58,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 16 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:36:58,101 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 89 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:58,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 537 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:36:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 19:36:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2022-11-18 19:36:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 83 states have (on average 1.072289156626506) internal successors, (89), 80 states have internal predecessors, (89), 10 states have call successors, (10), 4 states have call predecessors, (10), 26 states have return successors, (58), 35 states have call predecessors, (58), 10 states have call successors, (58) [2022-11-18 19:36:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2022-11-18 19:36:58,112 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 74 [2022-11-18 19:36:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:58,112 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2022-11-18 19:36:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.4705882352941178) internal successors, (84), 28 states have internal predecessors, (84), 14 states have call successors, (16), 1 states have call predecessors, (16), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2022-11-18 19:36:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2022-11-18 19:36:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:36:58,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:58,114 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:58,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:58,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:58,320 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1898709812, now seen corresponding path program 8 times [2022-11-18 19:36:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:58,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060044336] [2022-11-18 19:36:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:36:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:36:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:36:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:36:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:36:58,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:58,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060044336] [2022-11-18 19:36:58,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060044336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:36:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086196032] [2022-11-18 19:36:58,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:58,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:36:58,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:58,891 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:36:58,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 19:36:59,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:59,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:59,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:36:59,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:36:59,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 84 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:37:02,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086196032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:02,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:37:02,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 27] total 45 [2022-11-18 19:37:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289859643] [2022-11-18 19:37:02,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:02,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 19:37:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 19:37:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1838, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:37:02,946 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 45 states, 42 states have (on average 2.261904761904762) internal successors, (95), 35 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-18 19:37:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:04,006 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2022-11-18 19:37:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:37:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.261904761904762) internal successors, (95), 35 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) Word has length 74 [2022-11-18 19:37:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:04,008 INFO L225 Difference]: With dead ends: 163 [2022-11-18 19:37:04,008 INFO L226 Difference]: Without dead ends: 159 [2022-11-18 19:37:04,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 126 SyntacticMatches, 13 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=373, Invalid=3049, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 19:37:04,009 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 49 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 779 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:37:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-18 19:37:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 117. [2022-11-18 19:37:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 78 states have internal predecessors, (87), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (55), 34 states have call predecessors, (55), 10 states have call successors, (55) [2022-11-18 19:37:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2022-11-18 19:37:04,022 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 74 [2022-11-18 19:37:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2022-11-18 19:37:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.261904761904762) internal successors, (95), 35 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (24), 14 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-18 19:37:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2022-11-18 19:37:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:37:04,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:04,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:04,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:04,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:04,231 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash -437615564, now seen corresponding path program 23 times [2022-11-18 19:37:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:04,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196529367] [2022-11-18 19:37:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:37:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:37:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:37:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196529367] [2022-11-18 19:37:04,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196529367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830370907] [2022-11-18 19:37:04,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:37:04,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:04,935 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:04,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 19:37:05,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:37:05,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:05,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:37:05,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:37:06,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830370907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:16,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:16,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 36 [2022-11-18 19:37:16,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074679880] [2022-11-18 19:37:16,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:16,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:37:16,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:16,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:37:16,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2181, Unknown=2, NotChecked=0, Total=2352 [2022-11-18 19:37:16,787 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 36 states, 32 states have (on average 2.03125) internal successors, (65), 26 states have internal predecessors, (65), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-18 19:37:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:18,390 INFO L93 Difference]: Finished difference Result 186 states and 251 transitions. [2022-11-18 19:37:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:37:18,391 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 2.03125) internal successors, (65), 26 states have internal predecessors, (65), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) Word has length 74 [2022-11-18 19:37:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:18,392 INFO L225 Difference]: With dead ends: 186 [2022-11-18 19:37:18,392 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 19:37:18,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=467, Invalid=4087, Unknown=2, NotChecked=0, Total=4556 [2022-11-18 19:37:18,394 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:18,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 665 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:37:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 19:37:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 112. [2022-11-18 19:37:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 74 states have internal predecessors, (84), 10 states have call successors, (10), 4 states have call predecessors, (10), 23 states have return successors, (51), 33 states have call predecessors, (51), 10 states have call successors, (51) [2022-11-18 19:37:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2022-11-18 19:37:18,408 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 74 [2022-11-18 19:37:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:18,408 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2022-11-18 19:37:18,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 2.03125) internal successors, (65), 26 states have internal predecessors, (65), 11 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-18 19:37:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2022-11-18 19:37:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:37:18,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:18,410 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:18,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:18,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:18,617 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1410533388, now seen corresponding path program 24 times [2022-11-18 19:37:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:18,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718720686] [2022-11-18 19:37:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:18,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:37:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:37:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-18 19:37:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718720686] [2022-11-18 19:37:19,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718720686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871050675] [2022-11-18 19:37:19,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:37:19,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:19,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:19,306 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:19,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 19:37:19,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:37:19,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:19,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 19:37:19,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-18 19:37:20,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:37:25,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871050675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:25,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:37:25,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 28] total 56 [2022-11-18 19:37:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593915367] [2022-11-18 19:37:25,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:25,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 19:37:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 19:37:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2881, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:37:25,451 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand has 56 states, 50 states have (on average 2.12) internal successors, (106), 43 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) [2022-11-18 19:37:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:27,374 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2022-11-18 19:37:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:37:27,374 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 50 states have (on average 2.12) internal successors, (106), 43 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) Word has length 74 [2022-11-18 19:37:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:27,375 INFO L225 Difference]: With dead ends: 204 [2022-11-18 19:37:27,375 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 19:37:27,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 120 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=637, Invalid=5369, Unknown=0, NotChecked=0, Total=6006 [2022-11-18 19:37:27,376 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 88 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:27,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 817 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:37:27,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 19:37:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 115. [2022-11-18 19:37:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 80 states have (on average 1.075) internal successors, (86), 76 states have internal predecessors, (86), 10 states have call successors, (10), 4 states have call predecessors, (10), 24 states have return successors, (53), 34 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-18 19:37:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2022-11-18 19:37:27,391 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 74 [2022-11-18 19:37:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:27,392 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2022-11-18 19:37:27,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 50 states have (on average 2.12) internal successors, (106), 43 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 16 states have return successors, (27), 17 states have call predecessors, (27), 21 states have call successors, (27) [2022-11-18 19:37:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2022-11-18 19:37:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:37:27,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:27,394 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:27,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-11-18 19:37:27,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-18 19:37:27,601 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:27,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:27,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1425316748, now seen corresponding path program 25 times [2022-11-18 19:37:27,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:27,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328442247] [2022-11-18 19:37:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:37:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:27,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:37:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-18 19:37:28,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:28,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328442247] [2022-11-18 19:37:28,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328442247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:28,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409114941] [2022-11-18 19:37:28,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:37:28,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:28,242 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:28,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 19:37:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:37:28,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 24 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:37:29,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:39,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409114941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:39,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:39,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 35 [2022-11-18 19:37:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291306252] [2022-11-18 19:37:39,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:37:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:37:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1741, Unknown=2, NotChecked=0, Total=1892 [2022-11-18 19:37:39,984 INFO L87 Difference]: Start difference. First operand 115 states and 149 transitions. Second operand has 35 states, 32 states have (on average 2.09375) internal successors, (67), 25 states have internal predecessors, (67), 12 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-18 19:37:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:40,993 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2022-11-18 19:37:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:37:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.09375) internal successors, (67), 25 states have internal predecessors, (67), 12 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 12 states have call successors, (18) Word has length 74 [2022-11-18 19:37:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:40,995 INFO L225 Difference]: With dead ends: 174 [2022-11-18 19:37:40,995 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:37:40,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 102 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=353, Invalid=2951, Unknown=2, NotChecked=0, Total=3306 [2022-11-18 19:37:40,996 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:40,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 552 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:37:40,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:37:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2022-11-18 19:37:41,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 74 states have internal predecessors, (82), 10 states have call successors, (10), 4 states have call predecessors, (10), 23 states have return successors, (50), 31 states have call predecessors, (50), 10 states have call successors, (50) [2022-11-18 19:37:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2022-11-18 19:37:41,008 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 74 [2022-11-18 19:37:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:41,009 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2022-11-18 19:37:41,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.09375) internal successors, (67), 25 states have internal predecessors, (67), 12 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (18), 14 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-18 19:37:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2022-11-18 19:37:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:37:41,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:41,010 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:41,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:41,218 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:41,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1262966316, now seen corresponding path program 26 times [2022-11-18 19:37:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:41,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823790120] [2022-11-18 19:37:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:37:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:37:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:37:41,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:41,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823790120] [2022-11-18 19:37:41,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823790120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:41,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131480789] [2022-11-18 19:37:41,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:37:41,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:41,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:41,806 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:41,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 19:37:42,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:37:42,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:42,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:37:42,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 19:37:42,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:37:46,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131480789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:46,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:37:46,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 24] total 37 [2022-11-18 19:37:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918012965] [2022-11-18 19:37:46,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:46,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:37:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:37:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:37:46,041 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 29 states have internal predecessors, (87), 14 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) [2022-11-18 19:37:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:46,911 INFO L93 Difference]: Finished difference Result 144 states and 186 transitions. [2022-11-18 19:37:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:37:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 29 states have internal predecessors, (87), 14 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) Word has length 74 [2022-11-18 19:37:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:46,913 INFO L225 Difference]: With dead ends: 144 [2022-11-18 19:37:46,913 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 19:37:46,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:37:46,914 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:46,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 683 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:37:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 19:37:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2022-11-18 19:37:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 78 states have internal predecessors, (87), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (56), 34 states have call predecessors, (56), 10 states have call successors, (56) [2022-11-18 19:37:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2022-11-18 19:37:46,925 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 74 [2022-11-18 19:37:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:46,925 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2022-11-18 19:37:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 29 states have internal predecessors, (87), 14 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) [2022-11-18 19:37:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2022-11-18 19:37:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:37:46,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:46,927 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:46,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:47,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:47,134 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2059083156, now seen corresponding path program 27 times [2022-11-18 19:37:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414331605] [2022-11-18 19:37:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:47,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:37:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:37:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 19:37:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:47,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414331605] [2022-11-18 19:37:47,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414331605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:47,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214184267] [2022-11-18 19:37:47,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:37:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:47,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:47,831 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:47,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 19:37:48,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:37:48,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:48,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:37:48,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:37:49,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:37:56,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214184267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:56,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:37:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 27] total 56 [2022-11-18 19:37:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274825920] [2022-11-18 19:37:56,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:56,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 19:37:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:37:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 19:37:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2895, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:37:56,053 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand has 56 states, 53 states have (on average 2.056603773584906) internal successors, (109), 42 states have internal predecessors, (109), 19 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-18 19:37:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:58,035 INFO L93 Difference]: Finished difference Result 210 states and 286 transitions. [2022-11-18 19:37:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:37:58,035 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.056603773584906) internal successors, (109), 42 states have internal predecessors, (109), 19 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) Word has length 74 [2022-11-18 19:37:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:58,037 INFO L225 Difference]: With dead ends: 210 [2022-11-18 19:37:58,037 INFO L226 Difference]: Without dead ends: 206 [2022-11-18 19:37:58,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 123 SyntacticMatches, 6 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=529, Invalid=5477, Unknown=0, NotChecked=0, Total=6006 [2022-11-18 19:37:58,038 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 90 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:58,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 866 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:37:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-18 19:37:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 110. [2022-11-18 19:37:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 74 states have internal predecessors, (82), 10 states have call successors, (10), 4 states have call predecessors, (10), 23 states have return successors, (51), 31 states have call predecessors, (51), 10 states have call successors, (51) [2022-11-18 19:37:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2022-11-18 19:37:58,052 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 74 [2022-11-18 19:37:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:58,052 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2022-11-18 19:37:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.056603773584906) internal successors, (109), 42 states have internal predecessors, (109), 19 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-18 19:37:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2022-11-18 19:37:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 19:37:58,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:58,054 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:58,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-18 19:37:58,262 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:37:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 256823296, now seen corresponding path program 28 times [2022-11-18 19:37:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:37:58,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281622698] [2022-11-18 19:37:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:37:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:37:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:37:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:37:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:37:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 19:37:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:37:58,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281622698] [2022-11-18 19:37:58,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281622698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:37:58,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701174896] [2022-11-18 19:37:58,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:37:58,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:37:58,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:58,992 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:37:58,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 19:37:59,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:37:59,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:59,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:37:59,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 25 proven. 49 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 19:38:00,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:38:06,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701174896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:06,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:06,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 30] total 62 [2022-11-18 19:38:06,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129922554] [2022-11-18 19:38:06,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:06,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-18 19:38:06,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-18 19:38:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3588, Unknown=0, NotChecked=0, Total=3782 [2022-11-18 19:38:06,774 INFO L87 Difference]: Start difference. First operand 110 states and 143 transitions. Second operand has 62 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (30), 22 states have call predecessors, (30), 21 states have call successors, (30) [2022-11-18 19:38:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:08,843 INFO L93 Difference]: Finished difference Result 171 states and 221 transitions. [2022-11-18 19:38:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:38:08,843 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (30), 22 states have call predecessors, (30), 21 states have call successors, (30) Word has length 82 [2022-11-18 19:38:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:08,845 INFO L225 Difference]: With dead ends: 171 [2022-11-18 19:38:08,845 INFO L226 Difference]: Without dead ends: 167 [2022-11-18 19:38:08,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=527, Invalid=6115, Unknown=0, NotChecked=0, Total=6642 [2022-11-18 19:38:08,846 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 75 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:08,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 931 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:38:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-18 19:38:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 100. [2022-11-18 19:38:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 68 states have internal predecessors, (75), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (42), 27 states have call predecessors, (42), 10 states have call successors, (42) [2022-11-18 19:38:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2022-11-18 19:38:08,859 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 82 [2022-11-18 19:38:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:08,859 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2022-11-18 19:38:08,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 57 states have (on average 2.0350877192982457) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (30), 22 states have call predecessors, (30), 21 states have call successors, (30) [2022-11-18 19:38:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2022-11-18 19:38:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 19:38:08,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:08,861 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:08,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-18 19:38:09,069 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1271964480, now seen corresponding path program 29 times [2022-11-18 19:38:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:09,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510516881] [2022-11-18 19:38:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:38:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-18 19:38:09,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:09,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510516881] [2022-11-18 19:38:09,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510516881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:09,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85896399] [2022-11-18 19:38:09,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:38:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:09,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:09,960 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:09,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 19:38:10,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:38:10,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:10,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 19:38:10,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 34 proven. 45 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-18 19:38:11,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:21,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85896399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:21,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:21,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 43 [2022-11-18 19:38:21,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931897099] [2022-11-18 19:38:21,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:21,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 19:38:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 19:38:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2872, Unknown=2, NotChecked=0, Total=3080 [2022-11-18 19:38:21,413 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand has 43 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 31 states have internal predecessors, (74), 13 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-18 19:38:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:23,615 INFO L93 Difference]: Finished difference Result 192 states and 260 transitions. [2022-11-18 19:38:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:38:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 31 states have internal predecessors, (74), 13 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) Word has length 82 [2022-11-18 19:38:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:23,617 INFO L225 Difference]: With dead ends: 192 [2022-11-18 19:38:23,617 INFO L226 Difference]: Without dead ends: 188 [2022-11-18 19:38:23,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 108 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=651, Invalid=5667, Unknown=2, NotChecked=0, Total=6320 [2022-11-18 19:38:23,619 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 44 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:23,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 801 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:38:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-18 19:38:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 90. [2022-11-18 19:38:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 62 states have (on average 1.096774193548387) internal successors, (68), 62 states have internal predecessors, (68), 10 states have call successors, (10), 4 states have call predecessors, (10), 17 states have return successors, (34), 23 states have call predecessors, (34), 10 states have call successors, (34) [2022-11-18 19:38:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2022-11-18 19:38:23,631 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 82 [2022-11-18 19:38:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:23,632 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2022-11-18 19:38:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 31 states have internal predecessors, (74), 13 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-18 19:38:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2022-11-18 19:38:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 19:38:23,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:23,633 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:23,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:23,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-18 19:38:23,841 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1935481248, now seen corresponding path program 30 times [2022-11-18 19:38:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:23,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712042677] [2022-11-18 19:38:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:38:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 49 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 19:38:24,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:24,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712042677] [2022-11-18 19:38:24,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712042677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:24,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155826589] [2022-11-18 19:38:24,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:38:24,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:24,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:24,632 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:24,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-18 19:38:25,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:38:25,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:25,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 19:38:25,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:38:26,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:38:31,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155826589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:31,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:31,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 30] total 53 [2022-11-18 19:38:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128605441] [2022-11-18 19:38:31,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 19:38:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 19:38:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2578, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:38:31,206 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand has 53 states, 48 states have (on average 2.25) internal successors, (108), 40 states have internal predecessors, (108), 20 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 17 states have call predecessors, (28), 20 states have call successors, (28) [2022-11-18 19:38:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:33,210 INFO L93 Difference]: Finished difference Result 160 states and 208 transitions. [2022-11-18 19:38:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:38:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 2.25) internal successors, (108), 40 states have internal predecessors, (108), 20 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 17 states have call predecessors, (28), 20 states have call successors, (28) Word has length 82 [2022-11-18 19:38:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:33,211 INFO L225 Difference]: With dead ends: 160 [2022-11-18 19:38:33,211 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 19:38:33,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 137 SyntacticMatches, 15 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=575, Invalid=4827, Unknown=0, NotChecked=0, Total=5402 [2022-11-18 19:38:33,213 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:33,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 896 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:38:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 19:38:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 72. [2022-11-18 19:38:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 9 states have call successors, (9), 4 states have call predecessors, (9), 12 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2022-11-18 19:38:33,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2022-11-18 19:38:33,221 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 82 [2022-11-18 19:38:33,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:33,221 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2022-11-18 19:38:33,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 2.25) internal successors, (108), 40 states have internal predecessors, (108), 20 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 17 states have call predecessors, (28), 20 states have call successors, (28) [2022-11-18 19:38:33,221 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2022-11-18 19:38:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:38:33,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:33,222 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:33,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-18 19:38:33,430 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash -152078404, now seen corresponding path program 9 times [2022-11-18 19:38:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:33,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532979451] [2022-11-18 19:38:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:38:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 13 proven. 49 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:38:34,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:34,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532979451] [2022-11-18 19:38:34,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532979451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:34,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353170072] [2022-11-18 19:38:34,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:38:34,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:34,139 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:34,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-18 19:38:34,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:38:34,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:34,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:38:34,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 13 proven. 49 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:38:35,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:38:38,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353170072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:38,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:38,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 26] total 47 [2022-11-18 19:38:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262241902] [2022-11-18 19:38:38,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:38,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 19:38:38,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:38,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 19:38:38,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2009, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:38:38,520 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 47 states, 42 states have (on average 2.261904761904762) internal successors, (95), 38 states have internal predecessors, (95), 18 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-18 19:38:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:39,528 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2022-11-18 19:38:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:38:39,529 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 42 states have (on average 2.261904761904762) internal successors, (95), 38 states have internal predecessors, (95), 18 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) Word has length 73 [2022-11-18 19:38:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:39,530 INFO L225 Difference]: With dead ends: 98 [2022-11-18 19:38:39,530 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 19:38:39,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 122 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=351, Invalid=3189, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 19:38:39,531 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 73 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:39,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 583 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:38:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 19:38:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2022-11-18 19:38:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 55 states have internal predecessors, (59), 9 states have call successors, (9), 4 states have call predecessors, (9), 14 states have return successors, (25), 17 states have call predecessors, (25), 9 states have call successors, (25) [2022-11-18 19:38:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-11-18 19:38:39,538 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 73 [2022-11-18 19:38:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:39,538 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-18 19:38:39,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 42 states have (on average 2.261904761904762) internal successors, (95), 38 states have internal predecessors, (95), 18 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-18 19:38:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-11-18 19:38:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:38:39,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:39,540 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:39,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-11-18 19:38:39,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:39,747 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:39,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 867896604, now seen corresponding path program 31 times [2022-11-18 19:38:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:39,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021578485] [2022-11-18 19:38:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:39,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:38:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:38:40,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:40,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021578485] [2022-11-18 19:38:40,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021578485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:40,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189860875] [2022-11-18 19:38:40,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:38:40,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:40,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:40,290 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:40,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-18 19:38:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:41,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:38:41,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:38:41,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:38:44,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189860875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:44,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:44,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 25] total 36 [2022-11-18 19:38:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244602225] [2022-11-18 19:38:44,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:44,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:38:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:38:44,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:38:44,905 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 30 states have internal predecessors, (88), 15 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 11 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-18 19:38:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:45,709 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-11-18 19:38:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:38:45,709 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 30 states have internal predecessors, (88), 15 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 11 states have call predecessors, (23), 15 states have call successors, (23) Word has length 73 [2022-11-18 19:38:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:45,710 INFO L225 Difference]: With dead ends: 108 [2022-11-18 19:38:45,711 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 19:38:45,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 130 SyntacticMatches, 14 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=2019, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 19:38:45,712 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 78 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 686 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:38:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 19:38:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2022-11-18 19:38:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1) internal successors, (66), 62 states have internal predecessors, (66), 10 states have call successors, (10), 4 states have call predecessors, (10), 17 states have return successors, (32), 21 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-18 19:38:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-11-18 19:38:45,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 73 [2022-11-18 19:38:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:45,720 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-11-18 19:38:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 30 states have internal predecessors, (88), 15 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 11 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-18 19:38:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-11-18 19:38:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:38:45,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:45,722 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:45,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:45,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:45,930 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1057895076, now seen corresponding path program 32 times [2022-11-18 19:38:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760225332] [2022-11-18 19:38:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:38:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:38:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:46,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760225332] [2022-11-18 19:38:46,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760225332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:46,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504354433] [2022-11-18 19:38:46,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:38:46,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:46,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:46,395 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:46,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-18 19:38:47,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:38:47,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:47,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:38:47,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:38:47,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:38:50,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504354433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:50,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:50,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 25] total 36 [2022-11-18 19:38:50,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080976579] [2022-11-18 19:38:50,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:38:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:38:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:38:50,621 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 30 states have internal predecessors, (88), 15 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 11 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-18 19:38:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:51,303 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2022-11-18 19:38:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:38:51,304 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 30 states have internal predecessors, (88), 15 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 11 states have call predecessors, (23), 15 states have call successors, (23) Word has length 73 [2022-11-18 19:38:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:51,305 INFO L225 Difference]: With dead ends: 116 [2022-11-18 19:38:51,305 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:38:51,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 130 SyntacticMatches, 14 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=2019, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 19:38:51,306 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:51,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 532 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:38:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:38:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2022-11-18 19:38:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 64 states have internal predecessors, (69), 10 states have call successors, (10), 4 states have call predecessors, (10), 18 states have return successors, (34), 23 states have call predecessors, (34), 10 states have call successors, (34) [2022-11-18 19:38:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2022-11-18 19:38:51,315 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 73 [2022-11-18 19:38:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:51,315 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2022-11-18 19:38:51,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 30 states have internal predecessors, (88), 15 states have call successors, (17), 1 states have call predecessors, (17), 12 states have return successors, (23), 11 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-18 19:38:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2022-11-18 19:38:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 19:38:51,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:51,317 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:51,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:51,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-11-18 19:38:51,525 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash -37920068, now seen corresponding path program 33 times [2022-11-18 19:38:51,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:51,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624249887] [2022-11-18 19:38:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:51,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:38:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:38:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:52,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624249887] [2022-11-18 19:38:52,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624249887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:52,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815031718] [2022-11-18 19:38:52,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:38:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:52,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:52,215 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:52,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-18 19:38:53,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:38:53,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:53,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:38:53,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 47 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 19:38:53,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:38:56,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815031718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:56,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:38:56,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 26] total 47 [2022-11-18 19:38:56,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570232276] [2022-11-18 19:38:56,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:56,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 19:38:56,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:38:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 19:38:56,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2005, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 19:38:56,489 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 47 states, 42 states have (on average 2.261904761904762) internal successors, (95), 38 states have internal predecessors, (95), 18 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-18 19:38:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:57,511 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2022-11-18 19:38:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:38:57,512 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 42 states have (on average 2.261904761904762) internal successors, (95), 38 states have internal predecessors, (95), 18 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) Word has length 73 [2022-11-18 19:38:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:57,512 INFO L225 Difference]: With dead ends: 116 [2022-11-18 19:38:57,512 INFO L226 Difference]: Without dead ends: 107 [2022-11-18 19:38:57,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 122 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 19:38:57,513 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:57,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 628 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:38:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-18 19:38:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2022-11-18 19:38:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (36), 25 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 19:38:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-11-18 19:38:57,523 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 73 [2022-11-18 19:38:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:57,523 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-11-18 19:38:57,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 42 states have (on average 2.261904761904762) internal successors, (95), 38 states have internal predecessors, (95), 18 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-18 19:38:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-11-18 19:38:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:38:57,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:57,525 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:57,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:57,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-11-18 19:38:57,733 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:38:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -368383512, now seen corresponding path program 10 times [2022-11-18 19:38:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:38:57,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18715714] [2022-11-18 19:38:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:57,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:38:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:38:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:57,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:38:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:38:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:38:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:38:58,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:38:58,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18715714] [2022-11-18 19:38:58,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18715714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:38:58,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796443134] [2022-11-18 19:38:58,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:38:58,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:38:58,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:38:58,444 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:38:58,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-18 19:38:59,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:38:59,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:59,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:38:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:38:59,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:03,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796443134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:03,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:03,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2022-11-18 19:39:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032970436] [2022-11-18 19:39:03,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:03,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:39:03,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:39:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:39:03,014 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 23 states have internal predecessors, (60), 8 states have call successors, (8), 1 states have call predecessors, (8), 14 states have return successors, (18), 13 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-18 19:39:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:03,825 INFO L93 Difference]: Finished difference Result 126 states and 158 transitions. [2022-11-18 19:39:03,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:39:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 23 states have internal predecessors, (60), 8 states have call successors, (8), 1 states have call predecessors, (8), 14 states have return successors, (18), 13 states have call predecessors, (18), 8 states have call successors, (18) Word has length 81 [2022-11-18 19:39:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:03,826 INFO L225 Difference]: With dead ends: 126 [2022-11-18 19:39:03,826 INFO L226 Difference]: Without dead ends: 122 [2022-11-18 19:39:03,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:39:03,827 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 60 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:03,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 678 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:39:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-18 19:39:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 98. [2022-11-18 19:39:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 68 states have internal predecessors, (73), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (38), 25 states have call predecessors, (38), 10 states have call successors, (38) [2022-11-18 19:39:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2022-11-18 19:39:03,836 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 81 [2022-11-18 19:39:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:03,837 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2022-11-18 19:39:03,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 23 states have internal predecessors, (60), 8 states have call successors, (8), 1 states have call predecessors, (8), 14 states have return successors, (18), 13 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-18 19:39:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2022-11-18 19:39:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:39:03,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:03,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:03,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-18 19:39:04,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:04,047 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -336766392, now seen corresponding path program 34 times [2022-11-18 19:39:04,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:04,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072448640] [2022-11-18 19:39:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:39:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:39:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 14 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 19:39:04,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:04,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072448640] [2022-11-18 19:39:04,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072448640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:04,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297032766] [2022-11-18 19:39:04,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:39:04,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:04,927 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:04,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-18 19:39:05,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:39:05,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:05,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 19:39:05,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 21 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 19:39:06,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:39:10,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297032766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:10,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:39:10,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 49 [2022-11-18 19:39:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181393462] [2022-11-18 19:39:10,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:39:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:39:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2194, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:39:10,493 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 49 states, 44 states have (on average 2.25) internal successors, (99), 38 states have internal predecessors, (99), 18 states have call successors, (20), 1 states have call predecessors, (20), 14 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2022-11-18 19:39:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:11,608 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2022-11-18 19:39:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:39:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.25) internal successors, (99), 38 states have internal predecessors, (99), 18 states have call successors, (20), 1 states have call predecessors, (20), 14 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) Word has length 81 [2022-11-18 19:39:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:11,610 INFO L225 Difference]: With dead ends: 120 [2022-11-18 19:39:11,610 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 19:39:11,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 137 SyntacticMatches, 16 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=368, Invalid=3538, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:39:11,611 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 37 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:11,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 690 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:39:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 19:39:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2022-11-18 19:39:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 10 states have call successors, (10), 4 states have call predecessors, (10), 19 states have return successors, (36), 25 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 19:39:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-11-18 19:39:11,620 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 81 [2022-11-18 19:39:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:11,620 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-11-18 19:39:11,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.25) internal successors, (99), 38 states have internal predecessors, (99), 18 states have call successors, (20), 1 states have call predecessors, (20), 14 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2022-11-18 19:39:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-11-18 19:39:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:39:11,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:11,622 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:11,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:11,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-11-18 19:39:11,829 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:39:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:11,830 INFO L85 PathProgramCache]: Analyzing trace with hash -810209656, now seen corresponding path program 35 times [2022-11-18 19:39:11,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:11,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58101591] [2022-11-18 19:39:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:39:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:39:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:39:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:39:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 19:39:12,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58101591] [2022-11-18 19:39:12,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58101591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:12,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834996862] [2022-11-18 19:39:12,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:39:12,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:12,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:12,504 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:12,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-18 19:39:13,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:39:13,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:13,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:39:13,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 19:39:14,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:44,359 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 79 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:40:09,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834996862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:09,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:09,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 38 [2022-11-18 19:40:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644378257] [2022-11-18 19:40:09,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:09,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:40:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:40:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2671, Unknown=13, NotChecked=0, Total=2862 [2022-11-18 19:40:09,758 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 38 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 28 states have internal predecessors, (71), 12 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:40:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:11,039 INFO L93 Difference]: Finished difference Result 157 states and 203 transitions. [2022-11-18 19:40:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:40:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 28 states have internal predecessors, (71), 12 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) Word has length 81 [2022-11-18 19:40:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:11,041 INFO L225 Difference]: With dead ends: 157 [2022-11-18 19:40:11,041 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 19:40:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 52.9s TimeCoverageRelationStatistics Valid=398, Invalid=4281, Unknown=13, NotChecked=0, Total=4692 [2022-11-18 19:40:11,042 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:11,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 732 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:40:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 19:40:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2022-11-18 19:40:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.075) internal successors, (86), 78 states have internal predecessors, (86), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (52), 33 states have call predecessors, (52), 10 states have call successors, (52) [2022-11-18 19:40:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2022-11-18 19:40:11,054 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 81 [2022-11-18 19:40:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:11,054 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2022-11-18 19:40:11,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 28 states have internal predecessors, (71), 12 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:40:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2022-11-18 19:40:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:40:11,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:11,056 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:11,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:11,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-11-18 19:40:11,264 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:11,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1628365528, now seen corresponding path program 36 times [2022-11-18 19:40:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:11,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658320588] [2022-11-18 19:40:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:40:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:40:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 52 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 19:40:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:12,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658320588] [2022-11-18 19:40:12,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658320588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:12,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094510249] [2022-11-18 19:40:12,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:40:12,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:12,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:12,009 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:12,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-18 19:40:12,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:40:12,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:12,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:40:12,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 56 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 19:40:13,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 98 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:40:19,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094510249] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:19,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:40:19,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 30] total 58 [2022-11-18 19:40:19,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049099204] [2022-11-18 19:40:19,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:19,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-18 19:40:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:19,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-18 19:40:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3100, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:40:19,837 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand has 58 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 45 states have internal predecessors, (110), 21 states have call successors, (22), 1 states have call predecessors, (22), 17 states have return successors, (30), 18 states have call predecessors, (30), 21 states have call successors, (30) [2022-11-18 19:40:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:21,600 INFO L93 Difference]: Finished difference Result 181 states and 241 transitions. [2022-11-18 19:40:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:40:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 45 states have internal predecessors, (110), 21 states have call successors, (22), 1 states have call predecessors, (22), 17 states have return successors, (30), 18 states have call predecessors, (30), 21 states have call successors, (30) Word has length 81 [2022-11-18 19:40:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:21,601 INFO L225 Difference]: With dead ends: 181 [2022-11-18 19:40:21,601 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 19:40:21,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=536, Invalid=5164, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 19:40:21,603 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 76 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:21,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 950 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:40:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 19:40:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 116. [2022-11-18 19:40:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.075) internal successors, (86), 78 states have internal predecessors, (86), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (52), 33 states have call predecessors, (52), 10 states have call successors, (52) [2022-11-18 19:40:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2022-11-18 19:40:21,615 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 81 [2022-11-18 19:40:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:21,615 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2022-11-18 19:40:21,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 45 states have internal predecessors, (110), 21 states have call successors, (22), 1 states have call predecessors, (22), 17 states have return successors, (30), 18 states have call predecessors, (30), 21 states have call successors, (30) [2022-11-18 19:40:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2022-11-18 19:40:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:40:21,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:21,617 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:21,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:21,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-11-18 19:40:21,825 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:40:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1186539384, now seen corresponding path program 37 times [2022-11-18 19:40:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:21,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823084906] [2022-11-18 19:40:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:21,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:40:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:40:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:40:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:40:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 49 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 19:40:22,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823084906] [2022-11-18 19:40:22,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823084906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:40:22,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652811276] [2022-11-18 19:40:22,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:40:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:40:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:40:22,637 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:40:22,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-18 19:40:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:23,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:40:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 49 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 19:40:24,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:55,194 WARN L233 SmtUtils]: Spent 11.17s on a formula simplification. DAG size of input: 89 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:41:20,902 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:41:20,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652811276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:20,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:20,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 39 [2022-11-18 19:41:20,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816300784] [2022-11-18 19:41:20,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:20,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:41:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:41:20,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2771, Unknown=9, NotChecked=0, Total=2970 [2022-11-18 19:41:20,905 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand has 39 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 29 states have internal predecessors, (68), 11 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-18 19:41:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:22,801 INFO L93 Difference]: Finished difference Result 207 states and 278 transitions. [2022-11-18 19:41:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:41:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 29 states have internal predecessors, (68), 11 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) Word has length 81 [2022-11-18 19:41:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:22,803 INFO L225 Difference]: With dead ends: 207 [2022-11-18 19:41:22,803 INFO L226 Difference]: Without dead ends: 203 [2022-11-18 19:41:22,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=515, Invalid=5026, Unknown=9, NotChecked=0, Total=5550 [2022-11-18 19:41:22,804 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 43 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:22,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 856 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:41:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-18 19:41:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 123. [2022-11-18 19:41:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 84 states have internal predecessors, (90), 10 states have call successors, (10), 4 states have call predecessors, (10), 28 states have return successors, (60), 34 states have call predecessors, (60), 10 states have call successors, (60) [2022-11-18 19:41:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2022-11-18 19:41:22,818 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 81 [2022-11-18 19:41:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:22,818 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2022-11-18 19:41:22,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 29 states have internal predecessors, (68), 11 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-18 19:41:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2022-11-18 19:41:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:41:22,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:22,820 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:22,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-11-18 19:41:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-11-18 19:41:23,028 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1154922264, now seen corresponding path program 38 times [2022-11-18 19:41:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162544069] [2022-11-18 19:41:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:41:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:41:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:41:23,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:23,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162544069] [2022-11-18 19:41:23,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162544069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:23,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296499320] [2022-11-18 19:41:23,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:23,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:23,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:23,660 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:23,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-18 19:41:24,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:24,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:24,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 19:41:24,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 18 proven. 46 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:41:25,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:41:29,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296499320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:29,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:41:29,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 26] total 37 [2022-11-18 19:41:29,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577047832] [2022-11-18 19:41:29,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:29,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:41:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:41:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:41:29,966 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 30 states have internal predecessors, (91), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) [2022-11-18 19:41:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:30,860 INFO L93 Difference]: Finished difference Result 155 states and 200 transitions. [2022-11-18 19:41:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:41:30,861 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 30 states have internal predecessors, (91), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) Word has length 81 [2022-11-18 19:41:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:30,862 INFO L225 Difference]: With dead ends: 155 [2022-11-18 19:41:30,862 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 19:41:30,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 147 SyntacticMatches, 16 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=250, Invalid=2200, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:41:30,863 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:30,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 664 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:41:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 19:41:30,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2022-11-18 19:41:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 88 states have internal predecessors, (96), 10 states have call successors, (10), 4 states have call predecessors, (10), 30 states have return successors, (66), 38 states have call predecessors, (66), 10 states have call successors, (66) [2022-11-18 19:41:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2022-11-18 19:41:30,874 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 81 [2022-11-18 19:41:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:30,874 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2022-11-18 19:41:30,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 30 states have internal predecessors, (91), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) [2022-11-18 19:41:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2022-11-18 19:41:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:41:30,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:30,876 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:30,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:31,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-18 19:41:31,085 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -715164440, now seen corresponding path program 39 times [2022-11-18 19:41:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:31,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910332118] [2022-11-18 19:41:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:41:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:41:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 17 proven. 49 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 19:41:31,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910332118] [2022-11-18 19:41:31,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910332118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:31,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846225622] [2022-11-18 19:41:31,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:41:31,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:31,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:31,846 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:31,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-18 19:41:32,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:41:32,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:32,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 19:41:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 19:41:33,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:52,773 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_gcd_#res_5019| Int)) (let ((.cse0 (* 2 |v_gcd_#res_5019|))) (or (< c_gcd_~y1 .cse0) (< (let ((.cse1 (* 7 |v_gcd_#res_5019|))) (+ (* 5 (div (+ (- |c_gcd_#in~y2|) (- |c_gcd_#in~y1|) .cse1 (- 7)) 3)) .cse1 9)) (+ |c_gcd_#in~y1| |c_gcd_#in~y2|)) (< c_gcd_~y1 (+ |v_gcd_#res_5019| 1)) (< c_gcd_~y2 (+ c_gcd_~y1 .cse0 1)) (< c_gcd_~y2 (+ (* 3 |v_gcd_#res_5019|) c_gcd_~y1))))) (let ((.cse2 (div (+ |c_gcd_#in~y1| (- 3) |c_gcd_#in~y2|) 4))) (let ((.cse3 (* .cse2 2))) (or (< c_gcd_~y2 (+ 3 c_gcd_~y1 (* .cse2 3))) (< c_gcd_~y1 (+ .cse2 2)) (< c_gcd_~y1 (+ 2 .cse3)) (< c_gcd_~y2 (+ 3 .cse3 c_gcd_~y1)))))) is different from false [2022-11-18 19:41:52,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846225622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:52,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:52,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 38 [2022-11-18 19:41:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520268531] [2022-11-18 19:41:52,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:52,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:41:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:52,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:41:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2286, Unknown=4, NotChecked=96, Total=2550 [2022-11-18 19:41:52,778 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand has 38 states, 34 states have (on average 2.0) internal successors, (68), 28 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:41:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:54,216 INFO L93 Difference]: Finished difference Result 225 states and 306 transitions. [2022-11-18 19:41:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:41:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 2.0) internal successors, (68), 28 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) Word has length 81 [2022-11-18 19:41:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:54,219 INFO L225 Difference]: With dead ends: 225 [2022-11-18 19:41:54,219 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 19:41:54,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=367, Invalid=3923, Unknown=4, NotChecked=128, Total=4422 [2022-11-18 19:41:54,220 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:54,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 680 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:41:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 19:41:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 127. [2022-11-18 19:41:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 87 states have (on average 1.0689655172413792) internal successors, (93), 86 states have internal predecessors, (93), 10 states have call successors, (10), 4 states have call predecessors, (10), 29 states have return successors, (64), 36 states have call predecessors, (64), 10 states have call successors, (64) [2022-11-18 19:41:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2022-11-18 19:41:54,235 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 81 [2022-11-18 19:41:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:54,235 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2022-11-18 19:41:54,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 2.0) internal successors, (68), 28 states have internal predecessors, (68), 12 states have call successors, (12), 1 states have call predecessors, (12), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:41:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2022-11-18 19:41:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:41:54,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:54,237 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:41:54,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-11-18 19:41:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:54,447 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash -241721176, now seen corresponding path program 40 times [2022-11-18 19:41:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837512112] [2022-11-18 19:41:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:41:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:41:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:41:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:41:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:41:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:55,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837512112] [2022-11-18 19:41:55,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837512112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:41:55,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082177367] [2022-11-18 19:41:55,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:41:55,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:41:55,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:55,091 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:41:55,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-18 19:41:56,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:41:56,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:56,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 19:41:56,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 18 proven. 46 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:41:56,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:42:01,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082177367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:01,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 26] total 37 [2022-11-18 19:42:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836044835] [2022-11-18 19:42:01,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:42:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:42:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:42:01,249 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 30 states have internal predecessors, (91), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) [2022-11-18 19:42:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:02,127 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2022-11-18 19:42:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:42:02,128 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 30 states have internal predecessors, (91), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) Word has length 81 [2022-11-18 19:42:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:02,129 INFO L225 Difference]: With dead ends: 161 [2022-11-18 19:42:02,129 INFO L226 Difference]: Without dead ends: 157 [2022-11-18 19:42:02,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 147 SyntacticMatches, 16 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=250, Invalid=2200, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:42:02,130 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 62 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:02,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 620 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:42:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-18 19:42:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 130. [2022-11-18 19:42:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 89 states have (on average 1.0674157303370786) internal successors, (95), 88 states have internal predecessors, (95), 10 states have call successors, (10), 4 states have call predecessors, (10), 30 states have return successors, (67), 37 states have call predecessors, (67), 10 states have call successors, (67) [2022-11-18 19:42:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2022-11-18 19:42:02,142 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 81 [2022-11-18 19:42:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:02,142 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2022-11-18 19:42:02,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 30 states have internal predecessors, (91), 15 states have call successors, (19), 1 states have call predecessors, (19), 12 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) [2022-11-18 19:42:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2022-11-18 19:42:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:42:02,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:02,144 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:02,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:02,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:02,354 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:02,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash -273338296, now seen corresponding path program 41 times [2022-11-18 19:42:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:02,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490721273] [2022-11-18 19:42:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:02,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:42:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 19:42:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:03,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490721273] [2022-11-18 19:42:03,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490721273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:03,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702317331] [2022-11-18 19:42:03,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:03,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:03,047 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:03,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-18 19:42:04,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:42:04,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:04,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 19:42:04,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 47 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 19:42:05,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:53,037 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:42:53,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702317331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:53,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:42:53,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 39 [2022-11-18 19:42:53,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357920366] [2022-11-18 19:42:53,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:53,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 19:42:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:53,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 19:42:53,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2766, Unknown=8, NotChecked=0, Total=2970 [2022-11-18 19:42:53,040 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 39 states, 36 states have (on average 2.0) internal successors, (72), 29 states have internal predecessors, (72), 12 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:42:54,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:54,306 INFO L93 Difference]: Finished difference Result 216 states and 290 transitions. [2022-11-18 19:42:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:42:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 2.0) internal successors, (72), 29 states have internal predecessors, (72), 12 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) Word has length 81 [2022-11-18 19:42:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:54,307 INFO L225 Difference]: With dead ends: 216 [2022-11-18 19:42:54,307 INFO L226 Difference]: Without dead ends: 212 [2022-11-18 19:42:54,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=430, Invalid=4392, Unknown=8, NotChecked=0, Total=4830 [2022-11-18 19:42:54,309 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 60 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:54,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 573 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:42:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-18 19:42:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 132. [2022-11-18 19:42:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 90 states have internal predecessors, (96), 10 states have call successors, (10), 4 states have call predecessors, (10), 31 states have return successors, (70), 37 states have call predecessors, (70), 10 states have call successors, (70) [2022-11-18 19:42:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2022-11-18 19:42:54,322 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 81 [2022-11-18 19:42:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:54,322 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2022-11-18 19:42:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 2.0) internal successors, (72), 29 states have internal predecessors, (72), 12 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 19:42:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2022-11-18 19:42:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:42:54,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:54,324 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:54,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-11-18 19:42:54,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:54,531 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1533320312, now seen corresponding path program 42 times [2022-11-18 19:42:54,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:54,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012009801] [2022-11-18 19:42:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:42:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:42:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 49 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:42:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:55,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012009801] [2022-11-18 19:42:55,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012009801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:55,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240184949] [2022-11-18 19:42:55,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:42:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:55,302 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:55,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-18 19:42:56,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:42:56,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:56,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:42:56,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 49 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:42:57,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:43:02,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240184949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:02,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:02,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 28] total 43 [2022-11-18 19:43:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139103475] [2022-11-18 19:43:02,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:02,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 19:43:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 19:43:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1679, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 19:43:02,321 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand has 43 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 34 states have internal predecessors, (96), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (26), 14 states have call predecessors, (26), 16 states have call successors, (26) [2022-11-18 19:43:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:03,368 INFO L93 Difference]: Finished difference Result 160 states and 212 transitions. [2022-11-18 19:43:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:43:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 34 states have internal predecessors, (96), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (26), 14 states have call predecessors, (26), 16 states have call successors, (26) Word has length 81 [2022-11-18 19:43:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:03,370 INFO L225 Difference]: With dead ends: 160 [2022-11-18 19:43:03,370 INFO L226 Difference]: Without dead ends: 156 [2022-11-18 19:43:03,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 143 SyntacticMatches, 14 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=294, Invalid=2898, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 19:43:03,371 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 60 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:03,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 714 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:43:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-18 19:43:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2022-11-18 19:43:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 94 states have internal predecessors, (100), 10 states have call successors, (10), 4 states have call predecessors, (10), 33 states have return successors, (75), 39 states have call predecessors, (75), 10 states have call successors, (75) [2022-11-18 19:43:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2022-11-18 19:43:03,385 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 81 [2022-11-18 19:43:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:03,385 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2022-11-18 19:43:03,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 34 states have internal predecessors, (96), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (26), 14 states have call predecessors, (26), 16 states have call successors, (26) [2022-11-18 19:43:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2022-11-18 19:43:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:43:03,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:03,387 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:03,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:03,597 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:03,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1091494168, now seen corresponding path program 43 times [2022-11-18 19:43:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:03,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487641987] [2022-11-18 19:43:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:43:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 17 proven. 50 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 19:43:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:04,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487641987] [2022-11-18 19:43:04,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487641987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:04,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563690855] [2022-11-18 19:43:04,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:43:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:04,404 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:04,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-18 19:43:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:05,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:43:05,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-18 19:43:06,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 101 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 19:43:11,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563690855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:11,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:11,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 29] total 49 [2022-11-18 19:43:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307297198] [2022-11-18 19:43:11,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:11,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:43:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:43:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2180, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:43:11,569 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 49 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 39 states have internal predecessors, (101), 19 states have call successors, (20), 1 states have call predecessors, (20), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-18 19:43:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:13,117 INFO L93 Difference]: Finished difference Result 195 states and 262 transitions. [2022-11-18 19:43:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:43:13,118 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 39 states have internal predecessors, (101), 19 states have call successors, (20), 1 states have call predecessors, (20), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) Word has length 81 [2022-11-18 19:43:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:13,119 INFO L225 Difference]: With dead ends: 195 [2022-11-18 19:43:13,119 INFO L226 Difference]: Without dead ends: 191 [2022-11-18 19:43:13,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 137 SyntacticMatches, 17 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=512, Invalid=4180, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 19:43:13,120 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 83 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 811 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:43:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-18 19:43:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 132. [2022-11-18 19:43:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 90 states have internal predecessors, (96), 10 states have call successors, (10), 4 states have call predecessors, (10), 31 states have return successors, (69), 37 states have call predecessors, (69), 10 states have call successors, (69) [2022-11-18 19:43:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2022-11-18 19:43:13,132 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 81 [2022-11-18 19:43:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:13,132 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2022-11-18 19:43:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 39 states have internal predecessors, (101), 19 states have call successors, (20), 1 states have call predecessors, (20), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-18 19:43:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2022-11-18 19:43:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:43:13,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:13,133 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:13,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:13,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:13,343 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1059877048, now seen corresponding path program 44 times [2022-11-18 19:43:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:13,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404982147] [2022-11-18 19:43:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:43:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 19:43:14,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:14,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404982147] [2022-11-18 19:43:14,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404982147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:14,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253180279] [2022-11-18 19:43:14,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:43:14,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:14,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:14,138 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:14,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-18 19:43:15,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:43:15,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:15,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-18 19:43:15,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 55 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:43:15,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:43:18,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253180279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:18,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:18,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 26] total 38 [2022-11-18 19:43:18,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448680443] [2022-11-18 19:43:18,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:18,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:43:18,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:43:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:43:18,313 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 32 states have internal predecessors, (86), 13 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (24), 15 states have call predecessors, (24), 13 states have call successors, (24) [2022-11-18 19:43:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:19,534 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2022-11-18 19:43:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:43:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 32 states have internal predecessors, (86), 13 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (24), 15 states have call predecessors, (24), 13 states have call successors, (24) Word has length 81 [2022-11-18 19:43:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:19,535 INFO L225 Difference]: With dead ends: 149 [2022-11-18 19:43:19,535 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 19:43:19,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 151 SyntacticMatches, 13 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=311, Invalid=2445, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:43:19,536 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:19,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 593 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:43:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 19:43:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2022-11-18 19:43:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 90 states have internal predecessors, (96), 10 states have call successors, (10), 4 states have call predecessors, (10), 31 states have return successors, (69), 37 states have call predecessors, (69), 10 states have call successors, (69) [2022-11-18 19:43:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2022-11-18 19:43:19,547 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 81 [2022-11-18 19:43:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:19,547 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2022-11-18 19:43:19,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.388888888888889) internal successors, (86), 32 states have internal predecessors, (86), 13 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (24), 15 states have call predecessors, (24), 13 states have call successors, (24) [2022-11-18 19:43:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2022-11-18 19:43:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:43:19,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:19,549 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:19,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-11-18 19:43:19,759 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 438458108, now seen corresponding path program 45 times [2022-11-18 19:43:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155733366] [2022-11-18 19:43:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:43:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:43:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155733366] [2022-11-18 19:43:20,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155733366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758795091] [2022-11-18 19:43:20,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:43:20,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:20,750 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:20,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-18 19:43:22,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:43:22,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:22,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:43:22,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-18 19:43:22,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:41,085 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 56 DAG size of output: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:43:44,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758795091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:44,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:43:44,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 40 [2022-11-18 19:43:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119761640] [2022-11-18 19:43:44,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:44,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:43:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:43:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2672, Unknown=4, NotChecked=0, Total=2862 [2022-11-18 19:43:44,632 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand has 40 states, 37 states have (on average 1.945945945945946) internal successors, (72), 28 states have internal predecessors, (72), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2022-11-18 19:43:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:46,341 INFO L93 Difference]: Finished difference Result 198 states and 265 transitions. [2022-11-18 19:43:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:43:46,342 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.945945945945946) internal successors, (72), 28 states have internal predecessors, (72), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) Word has length 89 [2022-11-18 19:43:46,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:46,343 INFO L225 Difference]: With dead ends: 198 [2022-11-18 19:43:46,343 INFO L226 Difference]: Without dead ends: 194 [2022-11-18 19:43:46,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 124 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=452, Invalid=4514, Unknown=4, NotChecked=0, Total=4970 [2022-11-18 19:43:46,344 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 48 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:46,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 846 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:43:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-18 19:43:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2022-11-18 19:43:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 98 states have internal predecessors, (108), 10 states have call successors, (10), 4 states have call predecessors, (10), 35 states have return successors, (80), 45 states have call predecessors, (80), 10 states have call successors, (80) [2022-11-18 19:43:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-11-18 19:43:46,357 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 89 [2022-11-18 19:43:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:46,357 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-11-18 19:43:46,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.945945945945946) internal successors, (72), 28 states have internal predecessors, (72), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2022-11-18 19:43:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-11-18 19:43:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:43:46,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:46,359 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:46,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-11-18 19:43:46,569 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1193648228, now seen corresponding path program 46 times [2022-11-18 19:43:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:46,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037523034] [2022-11-18 19:43:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:46,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:43:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 19:43:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:47,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037523034] [2022-11-18 19:43:47,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037523034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:47,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667830381] [2022-11-18 19:43:47,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:43:47,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:47,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:47,323 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:47,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-18 19:43:48,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:43:48,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:48,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:43:48,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-18 19:43:49,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:55,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667830381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:55,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:43:55,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2022-11-18 19:43:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831853209] [2022-11-18 19:43:55,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:55,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:43:55,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:55,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:43:55,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1369, Unknown=1, NotChecked=0, Total=1482 [2022-11-18 19:43:55,597 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 32 states, 31 states have (on average 2.0) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (20), 14 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-18 19:43:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:56,497 INFO L93 Difference]: Finished difference Result 181 states and 240 transitions. [2022-11-18 19:43:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:43:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (20), 14 states have call predecessors, (20), 8 states have call successors, (20) Word has length 89 [2022-11-18 19:43:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:56,499 INFO L225 Difference]: With dead ends: 181 [2022-11-18 19:43:56,499 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 19:43:56,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=259, Invalid=2602, Unknown=1, NotChecked=0, Total=2862 [2022-11-18 19:43:56,499 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 48 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:56,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 641 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:43:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 19:43:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2022-11-18 19:43:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 98 states have internal predecessors, (108), 10 states have call successors, (10), 4 states have call predecessors, (10), 35 states have return successors, (80), 45 states have call predecessors, (80), 10 states have call successors, (80) [2022-11-18 19:43:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-11-18 19:43:56,507 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 89 [2022-11-18 19:43:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:56,507 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-11-18 19:43:56,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (20), 14 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-18 19:43:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-11-18 19:43:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:43:56,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:56,508 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:56,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:56,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:56,711 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1543732796, now seen corresponding path program 11 times [2022-11-18 19:43:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593165249] [2022-11-18 19:43:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:43:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:43:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:43:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593165249] [2022-11-18 19:43:57,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593165249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384349945] [2022-11-18 19:43:57,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:43:57,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:57,600 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:57,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-18 19:43:59,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:43:59,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:59,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 19:43:59,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:43:59,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:44:08,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384349945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:08,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:44:08,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 32] total 59 [2022-11-18 19:44:08,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145465507] [2022-11-18 19:44:08,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:08,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 19:44:08,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 19:44:08,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3221, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 19:44:08,273 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 59 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (33), 20 states have call predecessors, (33), 21 states have call successors, (33) [2022-11-18 19:44:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:10,075 INFO L93 Difference]: Finished difference Result 183 states and 241 transitions. [2022-11-18 19:44:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:44:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (33), 20 states have call predecessors, (33), 21 states have call successors, (33) Word has length 89 [2022-11-18 19:44:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:10,077 INFO L225 Difference]: With dead ends: 183 [2022-11-18 19:44:10,077 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 19:44:10,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 150 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2022-11-18 19:44:10,078 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 127 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:10,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1004 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:44:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 19:44:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2022-11-18 19:44:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 98 states have internal predecessors, (108), 10 states have call successors, (10), 4 states have call predecessors, (10), 35 states have return successors, (80), 45 states have call predecessors, (80), 10 states have call successors, (80) [2022-11-18 19:44:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-11-18 19:44:10,091 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 89 [2022-11-18 19:44:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:10,091 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-11-18 19:44:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (33), 20 states have call predecessors, (33), 21 states have call successors, (33) [2022-11-18 19:44:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-11-18 19:44:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:44:10,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:10,093 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:10,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-11-18 19:44:10,304 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash -935826180, now seen corresponding path program 47 times [2022-11-18 19:44:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:10,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622867021] [2022-11-18 19:44:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:44:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:11,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:44:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 20 proven. 58 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-18 19:44:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:11,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622867021] [2022-11-18 19:44:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622867021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:11,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289360452] [2022-11-18 19:44:11,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:44:11,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:11,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:11,299 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:11,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-18 19:44:12,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:44:12,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:12,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:44:12,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 21 proven. 71 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-18 19:44:13,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 5 proven. 125 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:44:22,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289360452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:22,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:44:22,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 32] total 60 [2022-11-18 19:44:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962122779] [2022-11-18 19:44:22,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-18 19:44:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-18 19:44:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=3313, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 19:44:22,460 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 60 states, 53 states have (on average 2.207547169811321) internal successors, (117), 45 states have internal predecessors, (117), 23 states have call successors, (24), 1 states have call predecessors, (24), 17 states have return successors, (33), 20 states have call predecessors, (33), 23 states have call successors, (33) [2022-11-18 19:44:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:24,456 INFO L93 Difference]: Finished difference Result 249 states and 343 transitions. [2022-11-18 19:44:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:44:24,457 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 53 states have (on average 2.207547169811321) internal successors, (117), 45 states have internal predecessors, (117), 23 states have call successors, (24), 1 states have call predecessors, (24), 17 states have return successors, (33), 20 states have call predecessors, (33), 23 states have call successors, (33) Word has length 89 [2022-11-18 19:44:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:24,458 INFO L225 Difference]: With dead ends: 249 [2022-11-18 19:44:24,458 INFO L226 Difference]: Without dead ends: 245 [2022-11-18 19:44:24,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 151 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=582, Invalid=5738, Unknown=0, NotChecked=0, Total=6320 [2022-11-18 19:44:24,459 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 50 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:24,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 967 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:44:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-18 19:44:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2022-11-18 19:44:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.0545454545454545) internal successors, (116), 108 states have internal predecessors, (116), 10 states have call successors, (10), 4 states have call predecessors, (10), 40 states have return successors, (94), 48 states have call predecessors, (94), 10 states have call successors, (94) [2022-11-18 19:44:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 220 transitions. [2022-11-18 19:44:24,476 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 220 transitions. Word has length 89 [2022-11-18 19:44:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:24,476 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 220 transitions. [2022-11-18 19:44:24,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 53 states have (on average 2.207547169811321) internal successors, (117), 45 states have internal predecessors, (117), 23 states have call successors, (24), 1 states have call predecessors, (24), 17 states have return successors, (33), 20 states have call predecessors, (33), 23 states have call successors, (33) [2022-11-18 19:44:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 220 transitions. [2022-11-18 19:44:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:44:24,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:24,478 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:24,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-18 19:44:24,689 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 696280156, now seen corresponding path program 48 times [2022-11-18 19:44:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298707835] [2022-11-18 19:44:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:44:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:44:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 20 proven. 64 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 19:44:25,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:25,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298707835] [2022-11-18 19:44:25,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298707835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:25,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318182773] [2022-11-18 19:44:25,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:44:25,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:25,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:25,461 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:25,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-18 19:44:26,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:44:26,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:26,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:44:26,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 25 proven. 61 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-18 19:44:27,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 5 proven. 125 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:44:34,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318182773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:34,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:44:34,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 32] total 52 [2022-11-18 19:44:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788733859] [2022-11-18 19:44:34,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 19:44:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 19:44:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2473, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 19:44:34,937 INFO L87 Difference]: Start difference. First operand 161 states and 220 transitions. Second operand has 52 states, 48 states have (on average 2.25) internal successors, (108), 40 states have internal predecessors, (108), 20 states have call successors, (23), 1 states have call predecessors, (23), 15 states have return successors, (33), 17 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 19:44:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:36,657 INFO L93 Difference]: Finished difference Result 270 states and 380 transitions. [2022-11-18 19:44:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:44:36,657 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 2.25) internal successors, (108), 40 states have internal predecessors, (108), 20 states have call successors, (23), 1 states have call predecessors, (23), 15 states have return successors, (33), 17 states have call predecessors, (33), 20 states have call successors, (33) Word has length 89 [2022-11-18 19:44:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:36,659 INFO L225 Difference]: With dead ends: 270 [2022-11-18 19:44:36,659 INFO L226 Difference]: Without dead ends: 266 [2022-11-18 19:44:36,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 155 SyntacticMatches, 15 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=504, Invalid=4466, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 19:44:36,661 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 95 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:36,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 869 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:44:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-18 19:44:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 149. [2022-11-18 19:44:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 100 states have internal predecessors, (108), 10 states have call successors, (10), 4 states have call predecessors, (10), 36 states have return successors, (83), 44 states have call predecessors, (83), 10 states have call successors, (83) [2022-11-18 19:44:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2022-11-18 19:44:36,675 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 89 [2022-11-18 19:44:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:36,675 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2022-11-18 19:44:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 48 states have (on average 2.25) internal successors, (108), 40 states have internal predecessors, (108), 20 states have call successors, (23), 1 states have call predecessors, (23), 15 states have return successors, (33), 17 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 19:44:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2022-11-18 19:44:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:44:36,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:36,676 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:36,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:36,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:36,877 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash -85066436, now seen corresponding path program 49 times [2022-11-18 19:44:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:36,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024738165] [2022-11-18 19:44:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:44:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:44:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:44:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:37,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024738165] [2022-11-18 19:44:37,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024738165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:37,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468450583] [2022-11-18 19:44:37,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:44:37,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:37,726 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:37,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-18 19:44:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:39,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:44:39,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:44:40,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:54,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468450583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:54,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:44:54,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 40 [2022-11-18 19:44:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323385820] [2022-11-18 19:44:54,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:44:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:44:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2676, Unknown=2, NotChecked=0, Total=2862 [2022-11-18 19:44:54,783 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 40 states, 37 states have (on average 2.0) internal successors, (74), 28 states have internal predecessors, (74), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-18 19:44:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:56,380 INFO L93 Difference]: Finished difference Result 264 states and 366 transitions. [2022-11-18 19:44:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:44:56,381 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.0) internal successors, (74), 28 states have internal predecessors, (74), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) Word has length 89 [2022-11-18 19:44:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:56,383 INFO L225 Difference]: With dead ends: 264 [2022-11-18 19:44:56,383 INFO L226 Difference]: Without dead ends: 260 [2022-11-18 19:44:56,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 124 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=451, Invalid=4517, Unknown=2, NotChecked=0, Total=4970 [2022-11-18 19:44:56,384 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:56,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 769 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:44:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-18 19:44:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 145. [2022-11-18 19:44:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 99 states have (on average 1.0606060606060606) internal successors, (105), 98 states have internal predecessors, (105), 10 states have call successors, (10), 4 states have call predecessors, (10), 35 states have return successors, (80), 42 states have call predecessors, (80), 10 states have call successors, (80) [2022-11-18 19:44:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 195 transitions. [2022-11-18 19:44:56,395 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 195 transitions. Word has length 89 [2022-11-18 19:44:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:56,395 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 195 transitions. [2022-11-18 19:44:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.0) internal successors, (74), 28 states have internal predecessors, (74), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-18 19:44:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 195 transitions. [2022-11-18 19:44:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:44:56,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:56,396 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:56,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:56,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-11-18 19:44:56,599 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1547039900, now seen corresponding path program 50 times [2022-11-18 19:44:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:56,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387974628] [2022-11-18 19:44:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:44:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:44:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:44:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:44:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 59 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 19:44:57,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:57,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387974628] [2022-11-18 19:44:57,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387974628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:44:57,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496909770] [2022-11-18 19:44:57,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:44:57,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:57,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:57,408 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:44:57,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-18 19:44:58,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:44:58,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:44:58,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:44:58,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:44:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 27 proven. 56 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 19:44:59,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:45:23,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496909770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:23,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:45:23,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 40 [2022-11-18 19:45:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33184166] [2022-11-18 19:45:23,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:45:23,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:45:23,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:23,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:45:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2678, Unknown=2, NotChecked=0, Total=2862 [2022-11-18 19:45:23,825 INFO L87 Difference]: Start difference. First operand 145 states and 195 transitions. Second operand has 40 states, 36 states have (on average 2.0) internal successors, (72), 28 states have internal predecessors, (72), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-18 19:45:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:25,557 INFO L93 Difference]: Finished difference Result 261 states and 359 transitions. [2022-11-18 19:45:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:45:25,557 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 2.0) internal successors, (72), 28 states have internal predecessors, (72), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) Word has length 89 [2022-11-18 19:45:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:25,559 INFO L225 Difference]: With dead ends: 261 [2022-11-18 19:45:25,559 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 19:45:25,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 124 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=453, Invalid=4657, Unknown=2, NotChecked=0, Total=5112 [2022-11-18 19:45:25,560 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:25,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 777 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:45:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 19:45:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 132. [2022-11-18 19:45:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 90 states have internal predecessors, (96), 10 states have call successors, (10), 4 states have call predecessors, (10), 31 states have return successors, (69), 37 states have call predecessors, (69), 10 states have call successors, (69) [2022-11-18 19:45:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2022-11-18 19:45:25,573 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 89 [2022-11-18 19:45:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:25,573 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2022-11-18 19:45:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 2.0) internal successors, (72), 28 states have internal predecessors, (72), 12 states have call successors, (14), 1 states have call predecessors, (14), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-18 19:45:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2022-11-18 19:45:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:45:25,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:25,574 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:25,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:25,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:25,787 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash -334868612, now seen corresponding path program 51 times [2022-11-18 19:45:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:25,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631384353] [2022-11-18 19:45:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:45:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-18 19:45:26,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:26,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631384353] [2022-11-18 19:45:26,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631384353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:26,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001759333] [2022-11-18 19:45:26,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:45:26,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:26,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:26,948 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:26,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-18 19:45:28,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:45:28,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:45:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-18 19:45:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:29,501 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 62 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-18 19:45:29,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:45:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 5 proven. 125 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:45:37,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001759333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:45:37,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:45:37,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 32] total 59 [2022-11-18 19:45:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361054631] [2022-11-18 19:45:37,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:45:37,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 19:45:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 19:45:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3221, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 19:45:37,077 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand has 59 states, 55 states have (on average 2.109090909090909) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (33), 20 states have call predecessors, (33), 21 states have call successors, (33) [2022-11-18 19:45:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:38,611 INFO L93 Difference]: Finished difference Result 222 states and 299 transitions. [2022-11-18 19:45:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:45:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 2.109090909090909) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (33), 20 states have call predecessors, (33), 21 states have call successors, (33) Word has length 89 [2022-11-18 19:45:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:38,623 INFO L225 Difference]: With dead ends: 222 [2022-11-18 19:45:38,623 INFO L226 Difference]: Without dead ends: 218 [2022-11-18 19:45:38,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 150 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=500, Invalid=5200, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 19:45:38,625 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 88 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:38,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 937 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:45:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-18 19:45:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 132. [2022-11-18 19:45:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 90 states have internal predecessors, (96), 10 states have call successors, (10), 4 states have call predecessors, (10), 31 states have return successors, (69), 37 states have call predecessors, (69), 10 states have call successors, (69) [2022-11-18 19:45:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2022-11-18 19:45:38,639 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 89 [2022-11-18 19:45:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:38,639 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2022-11-18 19:45:38,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 2.109090909090909) internal successors, (116), 44 states have internal predecessors, (116), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (33), 20 states have call predecessors, (33), 21 states have call successors, (33) [2022-11-18 19:45:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2022-11-18 19:45:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:45:38,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:38,640 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:38,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-11-18 19:45:38,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:38,841 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:38,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash 172755612, now seen corresponding path program 52 times [2022-11-18 19:45:38,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:38,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816518601] [2022-11-18 19:45:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:38,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:45:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:45:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 19:45:39,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816518601] [2022-11-18 19:45:39,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816518601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944648254] [2022-11-18 19:45:39,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:45:39,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:39,611 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:39,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-18 19:45:41,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:45:41,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:45:41,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:45:41,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 25 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 19:45:42,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:45:57,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944648254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:57,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:45:57,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 41 [2022-11-18 19:45:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43582391] [2022-11-18 19:45:57,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:45:57,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 19:45:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 19:45:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2290, Unknown=5, NotChecked=0, Total=2450 [2022-11-18 19:45:57,750 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand has 41 states, 36 states have (on average 2.0) internal successors, (72), 29 states have internal predecessors, (72), 12 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-18 19:45:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:59,854 INFO L93 Difference]: Finished difference Result 225 states and 306 transitions. [2022-11-18 19:45:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:45:59,854 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 2.0) internal successors, (72), 29 states have internal predecessors, (72), 12 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) Word has length 89 [2022-11-18 19:45:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:59,855 INFO L225 Difference]: With dead ends: 225 [2022-11-18 19:45:59,855 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 19:45:59,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=405, Invalid=4420, Unknown=5, NotChecked=0, Total=4830 [2022-11-18 19:45:59,856 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 50 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:59,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 871 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:45:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 19:45:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 126. [2022-11-18 19:45:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 86 states have (on average 1.069767441860465) internal successors, (92), 86 states have internal predecessors, (92), 10 states have call successors, (10), 4 states have call predecessors, (10), 29 states have return successors, (64), 35 states have call predecessors, (64), 10 states have call successors, (64) [2022-11-18 19:45:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 166 transitions. [2022-11-18 19:45:59,866 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 166 transitions. Word has length 89 [2022-11-18 19:45:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:59,866 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 166 transitions. [2022-11-18 19:45:59,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 2.0) internal successors, (72), 29 states have internal predecessors, (72), 12 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (22), 17 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-18 19:45:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 166 transitions. [2022-11-18 19:45:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:45:59,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:59,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:59,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:00,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-11-18 19:46:00,068 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:00,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1555059772, now seen corresponding path program 53 times [2022-11-18 19:46:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:00,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064432284] [2022-11-18 19:46:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:00,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:46:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:46:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 19:46:00,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064432284] [2022-11-18 19:46:00,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064432284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108629049] [2022-11-18 19:46:00,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:46:00,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:00,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:00,976 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:00,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-18 19:46:02,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:46:02,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:02,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:46:02,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-18 19:46:03,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 8 proven. 126 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:46:10,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108629049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:10,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:10,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 32] total 50 [2022-11-18 19:46:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819353197] [2022-11-18 19:46:10,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:10,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 19:46:10,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 19:46:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:46:10,027 INFO L87 Difference]: Start difference. First operand 126 states and 166 transitions. Second operand has 50 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 39 states have internal predecessors, (104), 18 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2022-11-18 19:46:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:11,458 INFO L93 Difference]: Finished difference Result 180 states and 241 transitions. [2022-11-18 19:46:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:46:11,459 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 39 states have internal predecessors, (104), 18 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) Word has length 89 [2022-11-18 19:46:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:11,460 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:46:11,460 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:46:11,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 154 SyntacticMatches, 18 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=460, Invalid=3962, Unknown=0, NotChecked=0, Total=4422 [2022-11-18 19:46:11,461 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 88 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:11,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 757 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:46:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:46:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 119. [2022-11-18 19:46:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 82 states have internal predecessors, (87), 10 states have call successors, (10), 4 states have call predecessors, (10), 27 states have return successors, (59), 32 states have call predecessors, (59), 10 states have call successors, (59) [2022-11-18 19:46:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2022-11-18 19:46:11,489 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 89 [2022-11-18 19:46:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:11,489 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2022-11-18 19:46:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 39 states have internal predecessors, (104), 18 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2022-11-18 19:46:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2022-11-18 19:46:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 19:46:11,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:11,490 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:11,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:11,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:11,691 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1804861948, now seen corresponding path program 54 times [2022-11-18 19:46:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:11,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808364846] [2022-11-18 19:46:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:46:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:46:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 17 proven. 60 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 19:46:12,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:12,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808364846] [2022-11-18 19:46:12,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808364846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:12,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229487804] [2022-11-18 19:46:12,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:46:12,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:12,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:12,448 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:12,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-18 19:46:14,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:46:14,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:14,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:46:14,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-18 19:46:14,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:46:21,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229487804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:21,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:21,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 29] total 44 [2022-11-18 19:46:21,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062056979] [2022-11-18 19:46:21,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:46:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:21,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:46:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1763, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:46:21,751 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 34 states have internal predecessors, (100), 16 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-18 19:46:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:23,069 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2022-11-18 19:46:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:46:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 34 states have internal predecessors, (100), 16 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) Word has length 89 [2022-11-18 19:46:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:23,071 INFO L225 Difference]: With dead ends: 157 [2022-11-18 19:46:23,071 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 19:46:23,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 16 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=308, Invalid=3114, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 19:46:23,072 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 62 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:23,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 867 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:46:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 19:46:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2022-11-18 19:46:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 83 states have (on average 1.072289156626506) internal successors, (89), 84 states have internal predecessors, (89), 10 states have call successors, (10), 4 states have call predecessors, (10), 28 states have return successors, (61), 33 states have call predecessors, (61), 10 states have call successors, (61) [2022-11-18 19:46:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2022-11-18 19:46:23,084 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 89 [2022-11-18 19:46:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:23,085 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2022-11-18 19:46:23,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 34 states have internal predecessors, (100), 16 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-18 19:46:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2022-11-18 19:46:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:46:23,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:23,086 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:23,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:23,299 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 665465288, now seen corresponding path program 55 times [2022-11-18 19:46:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695777565] [2022-11-18 19:46:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:46:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:46:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 29 proven. 77 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-18 19:46:24,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:24,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695777565] [2022-11-18 19:46:24,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695777565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:24,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832469987] [2022-11-18 19:46:24,224 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:46:24,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:24,225 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:24,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-18 19:46:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:26,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:46:26,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 36 proven. 84 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 19:46:26,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 7 proven. 162 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 19:46:36,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832469987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:36,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:36,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 34] total 56 [2022-11-18 19:46:36,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231496244] [2022-11-18 19:46:36,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:36,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 19:46:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 19:46:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:46:36,859 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand has 56 states, 54 states have (on average 2.185185185185185) internal successors, (118), 42 states have internal predecessors, (118), 21 states have call successors, (22), 1 states have call predecessors, (22), 17 states have return successors, (34), 19 states have call predecessors, (34), 21 states have call successors, (34) [2022-11-18 19:46:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:38,975 INFO L93 Difference]: Finished difference Result 188 states and 245 transitions. [2022-11-18 19:46:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:46:38,976 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 2.185185185185185) internal successors, (118), 42 states have internal predecessors, (118), 21 states have call successors, (22), 1 states have call predecessors, (22), 17 states have return successors, (34), 19 states have call predecessors, (34), 21 states have call successors, (34) Word has length 97 [2022-11-18 19:46:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:38,977 INFO L225 Difference]: With dead ends: 188 [2022-11-18 19:46:38,977 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 19:46:38,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 15 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=601, Invalid=5251, Unknown=0, NotChecked=0, Total=5852 [2022-11-18 19:46:38,978 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 70 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:38,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 953 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:46:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 19:46:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 114. [2022-11-18 19:46:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 78 states have internal predecessors, (84), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (53), 31 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-18 19:46:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 147 transitions. [2022-11-18 19:46:38,986 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 147 transitions. Word has length 97 [2022-11-18 19:46:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:38,986 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 147 transitions. [2022-11-18 19:46:38,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 2.185185185185185) internal successors, (118), 42 states have internal predecessors, (118), 21 states have call successors, (22), 1 states have call predecessors, (22), 17 states have return successors, (34), 19 states have call predecessors, (34), 21 states have call successors, (34) [2022-11-18 19:46:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 147 transitions. [2022-11-18 19:46:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:46:38,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:38,987 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:39,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:39,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-11-18 19:46:39,188 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:39,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1325213560, now seen corresponding path program 56 times [2022-11-18 19:46:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:39,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037572916] [2022-11-18 19:46:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:46:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:46:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:40,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 19:46:40,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037572916] [2022-11-18 19:46:40,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037572916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:40,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247911123] [2022-11-18 19:46:40,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:40,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:40,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:40,101 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:40,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-18 19:46:41,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:41,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:41,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 19:46:41,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 55 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-18 19:46:43,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 16 proven. 147 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:46:54,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247911123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:54,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:54,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 36] total 67 [2022-11-18 19:46:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486230591] [2022-11-18 19:46:54,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:54,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-18 19:46:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-18 19:46:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=4146, Unknown=0, NotChecked=0, Total=4422 [2022-11-18 19:46:54,278 INFO L87 Difference]: Start difference. First operand 114 states and 147 transitions. Second operand has 67 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 50 states have internal predecessors, (129), 23 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (36), 22 states have call predecessors, (36), 23 states have call successors, (36) [2022-11-18 19:46:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:56,328 INFO L93 Difference]: Finished difference Result 207 states and 279 transitions. [2022-11-18 19:46:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:46:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 50 states have internal predecessors, (129), 23 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (36), 22 states have call predecessors, (36), 23 states have call successors, (36) Word has length 97 [2022-11-18 19:46:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:56,330 INFO L225 Difference]: With dead ends: 207 [2022-11-18 19:46:56,330 INFO L226 Difference]: Without dead ends: 203 [2022-11-18 19:46:56,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=714, Invalid=6768, Unknown=0, NotChecked=0, Total=7482 [2022-11-18 19:46:56,331 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 120 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:56,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1010 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:46:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-18 19:46:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 99. [2022-11-18 19:46:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.088235294117647) internal successors, (74), 68 states have internal predecessors, (74), 10 states have call successors, (10), 4 states have call predecessors, (10), 20 states have return successors, (39), 26 states have call predecessors, (39), 10 states have call successors, (39) [2022-11-18 19:46:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2022-11-18 19:46:56,338 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 97 [2022-11-18 19:46:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:56,338 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2022-11-18 19:46:56,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 50 states have internal predecessors, (129), 23 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (36), 22 states have call predecessors, (36), 23 states have call successors, (36) [2022-11-18 19:46:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2022-11-18 19:46:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 19:46:56,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:56,339 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:56,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-18 19:46:56,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-11-18 19:46:56,543 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1195009080, now seen corresponding path program 57 times [2022-11-18 19:46:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488917940] [2022-11-18 19:46:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:46:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:46:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:46:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 29 proven. 76 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-18 19:46:57,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:57,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488917940] [2022-11-18 19:46:57,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488917940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:57,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565393254] [2022-11-18 19:46:57,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:46:57,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:57,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:57,539 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:57,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-18 19:46:59,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 19:46:59,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:59,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:46:59,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 39 proven. 83 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-18 19:47:00,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 3 proven. 168 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:47:10,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565393254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:10,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:10,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 35] total 60 [2022-11-18 19:47:10,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856164640] [2022-11-18 19:47:10,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-18 19:47:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-18 19:47:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3339, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 19:47:10,513 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 60 states, 55 states have (on average 2.2) internal successors, (121), 45 states have internal predecessors, (121), 22 states have call successors, (23), 1 states have call predecessors, (23), 18 states have return successors, (34), 20 states have call predecessors, (34), 22 states have call successors, (34) [2022-11-18 19:47:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:13,015 INFO L93 Difference]: Finished difference Result 172 states and 223 transitions. [2022-11-18 19:47:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:47:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 55 states have (on average 2.2) internal successors, (121), 45 states have internal predecessors, (121), 22 states have call successors, (23), 1 states have call predecessors, (23), 18 states have return successors, (34), 20 states have call predecessors, (34), 22 states have call successors, (34) Word has length 97 [2022-11-18 19:47:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:13,016 INFO L225 Difference]: With dead ends: 172 [2022-11-18 19:47:13,017 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 19:47:13,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 164 SyntacticMatches, 18 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=694, Invalid=6278, Unknown=0, NotChecked=0, Total=6972 [2022-11-18 19:47:13,018 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 105 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:13,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 946 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:47:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 19:47:13,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 81. [2022-11-18 19:47:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 9 states have call successors, (9), 4 states have call predecessors, (9), 15 states have return successors, (26), 19 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-18 19:47:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2022-11-18 19:47:13,028 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 97 [2022-11-18 19:47:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:13,028 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2022-11-18 19:47:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 55 states have (on average 2.2) internal successors, (121), 45 states have internal predecessors, (121), 22 states have call successors, (23), 1 states have call predecessors, (23), 18 states have return successors, (34), 20 states have call predecessors, (34), 22 states have call successors, (34) [2022-11-18 19:47:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-11-18 19:47:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 19:47:13,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:13,029 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:13,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-11-18 19:47:13,244 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -417419426, now seen corresponding path program 58 times [2022-11-18 19:47:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660971109] [2022-11-18 19:47:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:47:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:47:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 19:47:14,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:14,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660971109] [2022-11-18 19:47:14,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660971109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:14,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603594801] [2022-11-18 19:47:14,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:47:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:14,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:14,292 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:14,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-18 19:47:16,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:47:16,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:16,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 19:47:16,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 19:47:16,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:47:21,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603594801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:21,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:21,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 28] total 49 [2022-11-18 19:47:21,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061410637] [2022-11-18 19:47:21,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:21,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:47:21,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:47:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2188, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:47:21,388 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 49 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 40 states have internal predecessors, (102), 19 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-18 19:47:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:22,675 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2022-11-18 19:47:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:47:22,676 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 40 states have internal predecessors, (102), 19 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) Word has length 80 [2022-11-18 19:47:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:22,676 INFO L225 Difference]: With dead ends: 105 [2022-11-18 19:47:22,677 INFO L226 Difference]: Without dead ends: 96 [2022-11-18 19:47:22,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 136 SyntacticMatches, 14 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=395, Invalid=3511, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:47:22,677 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:22,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 766 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:47:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-18 19:47:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2022-11-18 19:47:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.1) internal successors, (66), 61 states have internal predecessors, (66), 9 states have call successors, (9), 4 states have call predecessors, (9), 17 states have return successors, (30), 21 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-18 19:47:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-11-18 19:47:22,684 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 80 [2022-11-18 19:47:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:22,684 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-11-18 19:47:22,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 40 states have internal predecessors, (102), 19 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-18 19:47:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-11-18 19:47:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 19:47:22,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:22,688 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:22,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:22,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:22,901 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 186328862, now seen corresponding path program 59 times [2022-11-18 19:47:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:22,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126268130] [2022-11-18 19:47:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:47:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:47:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 19:47:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126268130] [2022-11-18 19:47:23,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126268130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688893030] [2022-11-18 19:47:23,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:47:23,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:23,616 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:23,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-18 19:47:25,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:47:25,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:25,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 19:47:25,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 19:47:26,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:47:31,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688893030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:31,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:31,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 28] total 49 [2022-11-18 19:47:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147687302] [2022-11-18 19:47:31,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:31,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:47:31,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:31,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:47:31,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2190, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:47:31,411 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 49 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 40 states have internal predecessors, (102), 19 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-18 19:47:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:32,796 INFO L93 Difference]: Finished difference Result 111 states and 137 transitions. [2022-11-18 19:47:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:47:32,796 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 40 states have internal predecessors, (102), 19 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) Word has length 80 [2022-11-18 19:47:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:32,797 INFO L225 Difference]: With dead ends: 111 [2022-11-18 19:47:32,797 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 19:47:32,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 136 SyntacticMatches, 14 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=393, Invalid=3513, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 19:47:32,798 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 65 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:32,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 619 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:47:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 19:47:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2022-11-18 19:47:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 63 states have internal predecessors, (69), 9 states have call successors, (9), 4 states have call predecessors, (9), 18 states have return successors, (32), 23 states have call predecessors, (32), 9 states have call successors, (32) [2022-11-18 19:47:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-11-18 19:47:32,807 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 80 [2022-11-18 19:47:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:32,807 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-11-18 19:47:32,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 2.3181818181818183) internal successors, (102), 40 states have internal predecessors, (102), 19 states have call successors, (21), 1 states have call predecessors, (21), 15 states have return successors, (28), 15 states have call predecessors, (28), 19 states have call successors, (28) [2022-11-18 19:47:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-11-18 19:47:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:47:32,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:32,809 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:32,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:33,024 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1750311822, now seen corresponding path program 60 times [2022-11-18 19:47:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863099829] [2022-11-18 19:47:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:47:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:47:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 18 proven. 64 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-18 19:47:33,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863099829] [2022-11-18 19:47:33,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863099829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:33,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118622886] [2022-11-18 19:47:33,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:47:33,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:33,848 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:33,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-18 19:47:35,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:47:35,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:35,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 19:47:35,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 17 proven. 64 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 19:47:36,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:47:42,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118622886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:42,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:42,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 31] total 49 [2022-11-18 19:47:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924551015] [2022-11-18 19:47:42,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:47:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:47:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2184, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:47:42,645 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 49 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 40 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (29), 15 states have call predecessors, (29), 20 states have call successors, (29) [2022-11-18 19:47:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:44,161 INFO L93 Difference]: Finished difference Result 149 states and 190 transitions. [2022-11-18 19:47:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:47:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 40 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (29), 15 states have call predecessors, (29), 20 states have call successors, (29) Word has length 88 [2022-11-18 19:47:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:44,163 INFO L225 Difference]: With dead ends: 149 [2022-11-18 19:47:44,163 INFO L226 Difference]: Without dead ends: 145 [2022-11-18 19:47:44,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 155 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=408, Invalid=3752, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 19:47:44,164 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 131 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:44,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 845 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:47:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-18 19:47:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 116. [2022-11-18 19:47:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.075) internal successors, (86), 78 states have internal predecessors, (86), 10 states have call successors, (10), 4 states have call predecessors, (10), 25 states have return successors, (49), 33 states have call predecessors, (49), 10 states have call successors, (49) [2022-11-18 19:47:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 145 transitions. [2022-11-18 19:47:44,178 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 145 transitions. Word has length 88 [2022-11-18 19:47:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:44,179 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 145 transitions. [2022-11-18 19:47:44,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 40 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (29), 15 states have call predecessors, (29), 20 states have call successors, (29) [2022-11-18 19:47:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 145 transitions. [2022-11-18 19:47:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:47:44,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:44,180 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:44,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:44,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:44,381 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1813048046, now seen corresponding path program 12 times [2022-11-18 19:47:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:44,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471192616] [2022-11-18 19:47:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:47:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:47:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 18 proven. 76 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-18 19:47:45,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:45,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471192616] [2022-11-18 19:47:45,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471192616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:45,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202611008] [2022-11-18 19:47:45,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:47:45,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:45,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:45,296 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-18 19:47:47,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:47:47,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:47:47,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 18 proven. 76 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-18 19:47:48,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:47:54,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202611008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:54,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:54,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 31] total 54 [2022-11-18 19:47:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074391759] [2022-11-18 19:47:54,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:54,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-18 19:47:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-18 19:47:54,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2688, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 19:47:54,486 INFO L87 Difference]: Start difference. First operand 116 states and 145 transitions. Second operand has 54 states, 49 states have (on average 2.204081632653061) internal successors, (108), 43 states have internal predecessors, (108), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (31), 17 states have call predecessors, (31), 20 states have call successors, (31) [2022-11-18 19:47:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:56,121 INFO L93 Difference]: Finished difference Result 139 states and 177 transitions. [2022-11-18 19:47:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:47:56,121 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 49 states have (on average 2.204081632653061) internal successors, (108), 43 states have internal predecessors, (108), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (31), 17 states have call predecessors, (31), 20 states have call successors, (31) Word has length 88 [2022-11-18 19:47:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:56,122 INFO L225 Difference]: With dead ends: 139 [2022-11-18 19:47:56,122 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 19:47:56,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 149 SyntacticMatches, 16 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=438, Invalid=4392, Unknown=0, NotChecked=0, Total=4830 [2022-11-18 19:47:56,123 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 51 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:56,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 851 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:47:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 19:47:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2022-11-18 19:47:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 80 states have internal predecessors, (88), 10 states have call successors, (10), 4 states have call predecessors, (10), 26 states have return successors, (51), 34 states have call predecessors, (51), 10 states have call successors, (51) [2022-11-18 19:47:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2022-11-18 19:47:56,131 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 88 [2022-11-18 19:47:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:56,131 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2022-11-18 19:47:56,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 49 states have (on average 2.204081632653061) internal successors, (108), 43 states have internal predecessors, (108), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (31), 17 states have call predecessors, (31), 20 states have call successors, (31) [2022-11-18 19:47:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2022-11-18 19:47:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:47:56,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:56,132 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:56,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:56,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:56,333 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:56,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2134412686, now seen corresponding path program 61 times [2022-11-18 19:47:56,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:56,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582224210] [2022-11-18 19:47:56,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:56,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:47:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:47:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:47:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:47:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:47:57,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:57,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582224210] [2022-11-18 19:47:57,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582224210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:57,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213780387] [2022-11-18 19:47:57,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:47:57,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:57,155 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:57,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-11-18 19:47:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:59,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:47:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:48:00,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:05,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213780387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:05,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:48:05,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 40 [2022-11-18 19:48:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512161755] [2022-11-18 19:48:05,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:48:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:48:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:48:05,896 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 40 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 30 states have internal predecessors, (70), 11 states have call successors, (12), 1 states have call predecessors, (12), 16 states have return successors, (22), 16 states have call predecessors, (22), 11 states have call successors, (22) [2022-11-18 19:48:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:07,772 INFO L93 Difference]: Finished difference Result 190 states and 251 transitions. [2022-11-18 19:48:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:48:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 30 states have internal predecessors, (70), 11 states have call successors, (12), 1 states have call predecessors, (12), 16 states have return successors, (22), 16 states have call predecessors, (22), 11 states have call successors, (22) Word has length 88 [2022-11-18 19:48:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:07,774 INFO L225 Difference]: With dead ends: 190 [2022-11-18 19:48:07,774 INFO L226 Difference]: Without dead ends: 186 [2022-11-18 19:48:07,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=464, Invalid=4648, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 19:48:07,775 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 62 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:07,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 809 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:48:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-18 19:48:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 137. [2022-11-18 19:48:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 92 states have internal predecessors, (100), 10 states have call successors, (10), 4 states have call predecessors, (10), 32 states have return successors, (67), 40 states have call predecessors, (67), 10 states have call successors, (67) [2022-11-18 19:48:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2022-11-18 19:48:07,785 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 88 [2022-11-18 19:48:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:07,785 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2022-11-18 19:48:07,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 30 states have internal predecessors, (70), 11 states have call successors, (12), 1 states have call predecessors, (12), 16 states have return successors, (22), 16 states have call predecessors, (22), 11 states have call successors, (22) [2022-11-18 19:48:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2022-11-18 19:48:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:48:07,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:07,787 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:07,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:07,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:07,999 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gcdErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1958204946, now seen corresponding path program 62 times [2022-11-18 19:48:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:08,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537317607] [2022-11-18 19:48:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:48:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:48:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:48:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:48:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:48:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:48:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:48:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:48:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:48:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:48:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:48:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 16 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-18 19:48:08,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:08,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537317607] [2022-11-18 19:48:08,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537317607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:08,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580432693] [2022-11-18 19:48:08,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:48:08,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:08,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:08,979 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:08,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042d1e09-02d4-4d21-9f67-8eb128a92c87/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process