./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:58:40,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:58:40,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:58:40,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:58:40,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:58:40,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:58:40,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:58:40,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:58:40,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:58:40,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:58:40,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:58:40,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:58:40,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:58:40,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:58:40,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:58:40,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:58:40,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:58:40,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:58:40,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:58:40,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:58:40,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:58:40,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:58:40,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:58:40,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:58:40,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:58:40,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:58:40,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:58:40,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:58:40,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:58:40,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:58:40,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:58:40,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:58:40,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:58:40,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:58:40,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:58:40,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:58:40,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:58:40,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:58:40,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:58:40,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:58:40,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:58:40,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:58:40,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:58:40,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:58:40,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:58:40,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:58:40,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:58:40,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:58:40,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:58:40,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:58:40,658 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:58:40,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:58:40,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:58:40,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:58:40,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:58:40,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:58:40,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:58:40,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:58:40,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:58:40,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:58:40,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:58:40,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:58:40,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:58:40,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:58:40,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:58:40,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:58:40,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:58:40,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:58:40,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:58:40,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:58:40,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:58:40,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:58:40,665 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:58:40,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:58:40,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:58:40,666 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_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a [2022-11-16 10:58:40,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:58:40,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:58:40,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:58:40,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:58:40,991 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:58:40,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2022-11-16 10:58:41,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/data/6d5e3113a/716ec77fd66e400ba9ccf7d4ab6e1b57/FLAGa9fe69da0 [2022-11-16 10:58:41,609 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:58:41,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2022-11-16 10:58:41,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/data/6d5e3113a/716ec77fd66e400ba9ccf7d4ab6e1b57/FLAGa9fe69da0 [2022-11-16 10:58:41,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/data/6d5e3113a/716ec77fd66e400ba9ccf7d4ab6e1b57 [2022-11-16 10:58:41,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:58:41,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:58:41,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:58:41,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:58:41,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:58:41,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:58:41" (1/1) ... [2022-11-16 10:58:41,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b0318a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:41, skipping insertion in model container [2022-11-16 10:58:41,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:58:41" (1/1) ... [2022-11-16 10:58:41,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:58:42,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:58:42,190 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2022-11-16 10:58:42,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:58:42,212 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:58:42,226 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2022-11-16 10:58:42,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:58:42,245 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:58:42,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42 WrapperNode [2022-11-16 10:58:42,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:58:42,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:58:42,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:58:42,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:58:42,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,294 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-16 10:58:42,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:58:42,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:58:42,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:58:42,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:58:42,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:58:42,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:58:42,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:58:42,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:58:42,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (1/1) ... [2022-11-16 10:58:42,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:58:42,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:42,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:58:42,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:58:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:58:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:58:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:58:42,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:58:42,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 10:58:42,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 10:58:42,498 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:58:42,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:58:42,642 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:58:42,649 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:58:42,649 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 10:58:42,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:58:42 BoogieIcfgContainer [2022-11-16 10:58:42,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:58:42,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:58:42,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:58:42,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:58:42,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:58:41" (1/3) ... [2022-11-16 10:58:42,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cca2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:58:42, skipping insertion in model container [2022-11-16 10:58:42,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:58:42" (2/3) ... [2022-11-16 10:58:42,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cca2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:58:42, skipping insertion in model container [2022-11-16 10:58:42,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:58:42" (3/3) ... [2022-11-16 10:58:42,660 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2022-11-16 10:58:42,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:58:42,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:58:42,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:58:42,734 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;@680e10a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:58:42,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 10:58:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 10:58:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 10:58:42,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:42,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:42,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2022-11-16 10:58:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:42,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288946063] [2022-11-16 10:58:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288946063] [2022-11-16 10:58:42,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288946063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:42,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:42,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:58:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829845504] [2022-11-16 10:58:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 10:58:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 10:58:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:58:42,944 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-16 10:58:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:42,974 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2022-11-16 10:58:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 10:58:42,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2022-11-16 10:58:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:42,994 INFO L225 Difference]: With dead ends: 49 [2022-11-16 10:58:42,994 INFO L226 Difference]: Without dead ends: 22 [2022-11-16 10:58:42,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:58:43,003 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:43,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:58:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-16 10:58:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-16 10:58:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:58:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-11-16 10:58:43,059 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2022-11-16 10:58:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:43,061 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-11-16 10:58:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-16 10:58:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-11-16 10:58:43,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 10:58:43,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:43,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:58:43,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2022-11-16 10:58:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:43,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482562497] [2022-11-16 10:58:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:43,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:43,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482562497] [2022-11-16 10:58:43,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482562497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:43,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:43,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:58:43,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831806238] [2022-11-16 10:58:43,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:58:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:58:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:58:43,354 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2022-11-16 10:58:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:43,423 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-11-16 10:58:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:58:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 [2022-11-16 10:58:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:43,425 INFO L225 Difference]: With dead ends: 35 [2022-11-16 10:58:43,425 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 10:58:43,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:58:43,427 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:43,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:58:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 10:58:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-11-16 10:58:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:58:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-16 10:58:43,458 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2022-11-16 10:58:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:43,458 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-16 10:58:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2022-11-16 10:58:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-16 10:58:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 10:58:43,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:43,460 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:58:43,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:43,462 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2022-11-16 10:58:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:43,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931500690] [2022-11-16 10:58:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 10:58:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:58:43,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:43,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931500690] [2022-11-16 10:58:43,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931500690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:43,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:43,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:58:43,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891131838] [2022-11-16 10:58:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:43,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:58:43,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:58:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:58:43,726 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:58:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:43,855 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-16 10:58:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:58:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-16 10:58:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:43,861 INFO L225 Difference]: With dead ends: 39 [2022-11-16 10:58:43,861 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 10:58:43,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:58:43,864 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:43,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 10:58:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 10:58:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-11-16 10:58:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 10:58:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-16 10:58:43,876 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2022-11-16 10:58:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:43,876 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-16 10:58:43,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 10:58:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-16 10:58:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 10:58:43,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:43,878 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:43,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:58:43,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2022-11-16 10:58:43,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143968582] [2022-11-16 10:58:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:43,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:43,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386745277] [2022-11-16 10:58:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:43,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:43,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:43,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:58:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:44,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 10:58:44,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:58:44,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:58:44,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:44,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143968582] [2022-11-16 10:58:44,365 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:44,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386745277] [2022-11-16 10:58:44,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386745277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:44,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:44,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 10:58:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925416277] [2022-11-16 10:58:44,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:58:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:44,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:58:44,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:58:44,369 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:44,712 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2022-11-16 10:58:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:58:44,713 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2022-11-16 10:58:44,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:44,716 INFO L225 Difference]: With dead ends: 65 [2022-11-16 10:58:44,716 INFO L226 Difference]: Without dead ends: 51 [2022-11-16 10:58:44,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:58:44,718 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:44,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 60 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:58:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-16 10:58:44,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-16 10:58:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 10:58:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-11-16 10:58:44,744 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2022-11-16 10:58:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:44,744 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-11-16 10:58:44,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 10:58:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-11-16 10:58:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 10:58:44,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:44,746 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:44,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:44,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:44,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2022-11-16 10:58:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177299534] [2022-11-16 10:58:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:44,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:44,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719700467] [2022-11-16 10:58:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:44,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:58:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:45,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 10:58:45,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 10:58:45,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 10:58:45,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177299534] [2022-11-16 10:58:45,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719700467] [2022-11-16 10:58:45,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719700467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:45,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:45,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-16 10:58:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839647159] [2022-11-16 10:58:45,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:45,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 10:58:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 10:58:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:58:45,425 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 10:58:45,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:45,688 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-11-16 10:58:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:58:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2022-11-16 10:58:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:45,691 INFO L225 Difference]: With dead ends: 66 [2022-11-16 10:58:45,691 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 10:58:45,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-16 10:58:45,692 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:45,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 80 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 10:58:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 10:58:45,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-16 10:58:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 10:58:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-11-16 10:58:45,718 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26 [2022-11-16 10:58:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:45,719 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-11-16 10:58:45,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 10:58:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-11-16 10:58:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 10:58:45,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:45,722 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:45,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 10:58:45,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:45,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2022-11-16 10:58:45,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:45,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571848777] [2022-11-16 10:58:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:45,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:45,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:45,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482963639] [2022-11-16 10:58:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:45,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:45,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:45,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:45,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:58:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:46,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 10:58:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-16 10:58:46,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-16 10:58:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:47,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571848777] [2022-11-16 10:58:47,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:47,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482963639] [2022-11-16 10:58:47,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482963639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:47,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:47,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-16 10:58:47,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643712092] [2022-11-16 10:58:47,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:47,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 10:58:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 10:58:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-16 10:58:47,977 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 10:58:52,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:52,799 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2022-11-16 10:58:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 10:58:52,800 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2022-11-16 10:58:52,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:52,802 INFO L225 Difference]: With dead ends: 142 [2022-11-16 10:58:52,802 INFO L226 Difference]: Without dead ends: 111 [2022-11-16 10:58:52,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-11-16 10:58:52,804 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 63 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:52,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 94 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 10:58:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-16 10:58:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2022-11-16 10:58:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-16 10:58:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2022-11-16 10:58:52,856 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56 [2022-11-16 10:58:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:52,856 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2022-11-16 10:58:52,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 10:58:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2022-11-16 10:58:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 10:58:52,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:52,859 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:52,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 10:58:53,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2022-11-16 10:58:53,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:53,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35702649] [2022-11-16 10:58:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:53,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:53,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502244625] [2022-11-16 10:58:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:53,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:53,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:53,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:58:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:53,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 10:58:53,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-16 10:58:53,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-16 10:58:54,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35702649] [2022-11-16 10:58:54,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502244625] [2022-11-16 10:58:54,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502244625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:54,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:54,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-16 10:58:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976651794] [2022-11-16 10:58:54,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:54,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:58:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:54,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:58:54,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:58:54,309 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-16 10:58:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:55,912 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2022-11-16 10:58:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:58:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2022-11-16 10:58:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:55,919 INFO L225 Difference]: With dead ends: 161 [2022-11-16 10:58:55,924 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 10:58:55,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-11-16 10:58:55,927 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 42 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:55,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 10:58:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 10:58:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2022-11-16 10:58:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 10:58:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2022-11-16 10:58:56,036 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67 [2022-11-16 10:58:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:56,037 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2022-11-16 10:58:56,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-16 10:58:56,037 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2022-11-16 10:58:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 10:58:56,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:56,045 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 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] [2022-11-16 10:58:56,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:56,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:56,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2022-11-16 10:58:56,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:56,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145784315] [2022-11-16 10:58:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:56,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:56,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863720884] [2022-11-16 10:58:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:56,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:56,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:56,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:56,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:58:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:56,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 10:58:56,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 10:58:56,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:58:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 10:58:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:57,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145784315] [2022-11-16 10:58:57,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:57,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863720884] [2022-11-16 10:58:57,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863720884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:58:57,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:58:57,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-16 10:58:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046122348] [2022-11-16 10:58:57,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:58:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:58:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:58:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:58:57,149 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-16 10:58:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:57,689 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2022-11-16 10:58:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 10:58:57,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 72 [2022-11-16 10:58:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:57,692 INFO L225 Difference]: With dead ends: 117 [2022-11-16 10:58:57,692 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 10:58:57,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-11-16 10:58:57,693 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:57,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 92 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:58:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 10:58:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-16 10:58:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 57 states have internal predecessors, (60), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 10:58:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2022-11-16 10:58:57,742 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 72 [2022-11-16 10:58:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:57,742 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2022-11-16 10:58:57,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-16 10:58:57,743 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2022-11-16 10:58:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 10:58:57,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:57,745 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:57,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:57,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:57,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:57,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2022-11-16 10:58:57,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:57,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961132077] [2022-11-16 10:58:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:57,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:57,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190960476] [2022-11-16 10:58:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:57,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:57,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:57,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:58:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:58:58,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:58:58,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-16 10:58:58,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:58,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961132077] [2022-11-16 10:58:58,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190960476] [2022-11-16 10:58:58,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190960476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:58,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:58,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:58:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71658085] [2022-11-16 10:58:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:58:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:58,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:58:58,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:58:58,291 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 10:58:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:58,644 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2022-11-16 10:58:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:58:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-11-16 10:58:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:58,646 INFO L225 Difference]: With dead ends: 116 [2022-11-16 10:58:58,646 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 10:58:58,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:58:58,648 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:58,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 10:58:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 10:58:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2022-11-16 10:58:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 10:58:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-16 10:58:58,680 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 86 [2022-11-16 10:58:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:58,680 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-16 10:58:58,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 10:58:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-16 10:58:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 10:58:58,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 10:58:58,682 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:58:58,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:58,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 10:58:58,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 10:58:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:58:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2022-11-16 10:58:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:58:58,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399361333] [2022-11-16 10:58:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:58:58,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:58:58,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:58:58,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133642115] [2022-11-16 10:58:58,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:58:58,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:58:58,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:58:58,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:58:58,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:58:58,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:58:58,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:58:58,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:58:58,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:58:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-16 10:58:59,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:58:59,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:58:59,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399361333] [2022-11-16 10:58:59,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:58:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133642115] [2022-11-16 10:58:59,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133642115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:58:59,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:58:59,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:58:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105865055] [2022-11-16 10:58:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:58:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:58:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:58:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:58:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:58:59,111 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 10:58:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 10:58:59,235 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2022-11-16 10:58:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:58:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2022-11-16 10:58:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 10:58:59,237 INFO L225 Difference]: With dead ends: 78 [2022-11-16 10:58:59,237 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 10:58:59,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:58:59,240 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 10:58:59,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 10:58:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 10:58:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 10:58:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:58:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 10:58:59,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2022-11-16 10:58:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 10:58:59,246 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 10:58:59,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 10:58:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 10:58:59,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 10:58:59,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 10:58:59,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 10:58:59,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 10:58:59,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 10:59:11,606 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 97 DAG size of output: 14 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 10:59:11,900 INFO L902 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2022-11-16 10:59:11,900 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2022-11-16 10:59:11,900 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 22 61) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse0 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse3) (and .cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-11-16 10:59:11,900 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-11-16 10:59:11,901 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) [2022-11-16 10:59:11,901 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 .cse1 .cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse3 .cse4 .cse5 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5))) [2022-11-16 10:59:11,901 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 10:59:11,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 10:59:11,901 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 10:59:11,901 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse0 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse3) (and .cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-11-16 10:59:11,901 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-16 10:59:11,902 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3) (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse0 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse3) (and .cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|)))) [2022-11-16 10:59:11,902 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2022-11-16 10:59:11,902 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 10:59:11,902 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|))) (or (and .cse0 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)))) [2022-11-16 10:59:11,902 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2022-11-16 10:59:11,902 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 .cse1 .cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse3 .cse4 .cse5 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5))) [2022-11-16 10:59:11,902 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-11-16 10:59:11,903 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 .cse1 .cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse3 .cse4 .cse5 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5))) [2022-11-16 10:59:11,903 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 .cse1 .cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) .cse3 .cse4 .cse5 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5))) [2022-11-16 10:59:11,903 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-16 10:59:11,903 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-16 10:59:11,903 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-16 10:59:11,903 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-16 10:59:11,903 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-16 10:59:11,903 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-16 10:59:11,908 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:59:11,911 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:59:11,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:59:11 BoogieIcfgContainer [2022-11-16 10:59:11,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:59:11,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:59:11,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:59:11,941 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:59:11,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:58:42" (3/4) ... [2022-11-16 10:59:11,945 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:59:11,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 10:59:11,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-16 10:59:11,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-16 10:59:11,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 10:59:11,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:59:11,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:59:12,019 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:59:12,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:59:12,020 INFO L158 Benchmark]: Toolchain (without parser) took 30037.37ms. Allocated memory was 104.9MB in the beginning and 188.7MB in the end (delta: 83.9MB). Free memory was 71.3MB in the beginning and 138.2MB in the end (delta: -67.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,021 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 78.4MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:12,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.23ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 81.0MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.91ms. Allocated memory is still 104.9MB. Free memory was 81.0MB in the beginning and 79.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,022 INFO L158 Benchmark]: Boogie Preprocessor took 20.17ms. Allocated memory is still 104.9MB. Free memory was 79.2MB in the beginning and 78.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,023 INFO L158 Benchmark]: RCFGBuilder took 335.07ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 67.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,024 INFO L158 Benchmark]: TraceAbstraction took 29286.83ms. Allocated memory was 104.9MB in the beginning and 188.7MB in the end (delta: 83.9MB). Free memory was 66.8MB in the beginning and 140.3MB in the end (delta: -73.5MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,024 INFO L158 Benchmark]: Witness Printer took 78.49ms. Allocated memory is still 188.7MB. Free memory was 140.3MB in the beginning and 138.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:12,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 78.4MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.23ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 81.0MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.91ms. Allocated memory is still 104.9MB. Free memory was 81.0MB in the beginning and 79.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.17ms. Allocated memory is still 104.9MB. Free memory was 79.2MB in the beginning and 78.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 335.07ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 67.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 29286.83ms. Allocated memory was 104.9MB in the beginning and 188.7MB in the end (delta: 83.9MB). Free memory was 66.8MB in the beginning and 140.3MB in the end (delta: -73.5MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. * Witness Printer took 78.49ms. Allocated memory is still 188.7MB. Free memory was 140.3MB in the beginning and 138.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.2s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 275 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 234 mSDsluCounter, 760 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 495 mSDsCounter, 306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1566 IncrementalHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 306 mSolverCounterUnsat, 265 mSDtfsCounter, 1566 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 677 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 82 PreInvPairs, 108 NumberOfFragments, 419 HoareAnnotationTreeSize, 82 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 3459 FormulaSimplificationTreeSizeReductionInter, 12.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 669 ConstructedInterpolants, 0 QuantifiedInterpolants, 4301 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1147 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 1764/1968 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((p == 1 && B == d) && q == 0) && A == r) && B == 1) || ((((B + r == A && B == d) && p == q) && q == 1) && B == 1)) || ((((q == 0 && B * p == d) && A == r) && B == 1) && 2 == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((cond == 1 && A <= 1) && q == 0) && B * p == d) && A == r) && B == 1) && 0 <= A) && 2 == d) || (((((((cond == 1 && p == 1) && B == d) && A <= 1) && q == 0) && A == r) && B == 1) && 0 <= A) RESULT: Ultimate proved your program to be correct! [2022-11-16 10:59:12,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_355cb28c-dc03-47c7-8808-a5957349444b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE