./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohencu-ll.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_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/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_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/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_f1dee416-13ed-4796-b5dd-27985c3eab2d/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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:26:29,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:26:29,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:26:29,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:26:29,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:26:29,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:26:29,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:26:29,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:26:29,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:26:29,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:26:29,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:26:29,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:26:29,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:26:29,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:26:29,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:26:29,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:26:29,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:26:29,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:26:29,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:26:29,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:26:29,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:26:29,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:26:29,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:26:29,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:26:29,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:26:29,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:26:29,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:26:29,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:26:29,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:26:29,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:26:29,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:26:29,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:26:29,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:26:29,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:26:29,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:26:29,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:26:29,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:26:29,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:26:29,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:26:29,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:26:29,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:26:29,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:26:29,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:26:29,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:26:29,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:26:29,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:26:29,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:26:29,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:26:29,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:26:29,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:26:29,728 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:26:29,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:26:29,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:26:29,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:26:29,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:26:29,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:26:29,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:26:29,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:26:29,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:26:29,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:26:29,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:26:29,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:26:29,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:26:29,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:26:29,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:26:29,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:26:29,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:29,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:26:29,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:26:29,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:26:29,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:26:29,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:26:29,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:26:29,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:26:29,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:26:29,733 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_f1dee416-13ed-4796-b5dd-27985c3eab2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff [2022-11-16 11:26:30,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:26:30,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:26:30,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:26:30,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:26:30,137 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:26:30,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2022-11-16 11:26:30,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/data/363b1eed9/e28b0626798b4aadaa536b1a5eba4d4b/FLAGd7dfa53fd [2022-11-16 11:26:30,856 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:26:30,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2022-11-16 11:26:30,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/data/363b1eed9/e28b0626798b4aadaa536b1a5eba4d4b/FLAGd7dfa53fd [2022-11-16 11:26:31,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/data/363b1eed9/e28b0626798b4aadaa536b1a5eba4d4b [2022-11-16 11:26:31,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:26:31,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:26:31,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:31,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:26:31,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:26:31,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b019477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31, skipping insertion in model container [2022-11-16 11:26:31,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:26:31,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:26:31,459 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_f1dee416-13ed-4796-b5dd-27985c3eab2d/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2022-11-16 11:26:31,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:31,523 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:26:31,544 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_f1dee416-13ed-4796-b5dd-27985c3eab2d/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2022-11-16 11:26:31,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:26:31,595 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:26:31,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31 WrapperNode [2022-11-16 11:26:31,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:26:31,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:31,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:26:31,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:26:31,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,658 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-16 11:26:31,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:26:31,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:26:31,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:26:31,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:26:31,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:26:31,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:26:31,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:26:31,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:26:31,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (1/1) ... [2022-11-16 11:26:31,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:26:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:31,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:26:31,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:26:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:26:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:26:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:26:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:26:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:26:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:26:31,917 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:26:31,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:26:32,181 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:26:32,189 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:26:32,189 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:26:32,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:32 BoogieIcfgContainer [2022-11-16 11:26:32,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:26:32,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:26:32,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:26:32,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:26:32,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:26:31" (1/3) ... [2022-11-16 11:26:32,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7cc65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:32, skipping insertion in model container [2022-11-16 11:26:32,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:26:31" (2/3) ... [2022-11-16 11:26:32,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7cc65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:26:32, skipping insertion in model container [2022-11-16 11:26:32,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:32" (3/3) ... [2022-11-16 11:26:32,203 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2022-11-16 11:26:32,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:26:32,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:26:32,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:26:32,294 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;@d882e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:26:32,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:26:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:26:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:26:32,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:32,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:32,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1823012769, now seen corresponding path program 1 times [2022-11-16 11:26:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:32,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960982308] [2022-11-16 11:26:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:32,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960982308] [2022-11-16 11:26:32,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960982308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:32,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:32,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:26:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27756177] [2022-11-16 11:26:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:32,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:26:32,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:26:32,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:26:32,687 INFO L87 Difference]: Start difference. First operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 11:26:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:32,735 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2022-11-16 11:26:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:26:32,739 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2022-11-16 11:26:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:32,766 INFO L225 Difference]: With dead ends: 48 [2022-11-16 11:26:32,766 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 11:26:32,773 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 11:26:32,786 INFO L413 NwaCegarLoop]: 35 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, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:32,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:26:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 11:26:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 11:26:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:26:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2022-11-16 11:26:32,859 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 7 [2022-11-16 11:26:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:32,860 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2022-11-16 11:26:32,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 11:26:32,862 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2022-11-16 11:26:32,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:26:32,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:32,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:32,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:26:32,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1811632607, now seen corresponding path program 1 times [2022-11-16 11:26:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:32,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529048717] [2022-11-16 11:26:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:33,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:33,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529048717] [2022-11-16 11:26:33,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529048717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:33,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:33,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:26:33,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209768927] [2022-11-16 11:26:33,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:33,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:26:33,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:26:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:26:33,223 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 11:26:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:33,332 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-11-16 11:26:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:26:33,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2022-11-16 11:26:33,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:33,334 INFO L225 Difference]: With dead ends: 27 [2022-11-16 11:26:33,334 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 11:26:33,335 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 11:26:33,336 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:33,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 56 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:26:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 11:26:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 11:26:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:26:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-16 11:26:33,351 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2022-11-16 11:26:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:33,352 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-16 11:26:33,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 11:26:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-16 11:26:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:26:33,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:33,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:33,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:26:33,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:33,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1582559355, now seen corresponding path program 1 times [2022-11-16 11:26:33,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:33,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520953483] [2022-11-16 11:26:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:33,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007304914] [2022-11-16 11:26:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:33,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:33,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:33,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:26:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:33,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:26:33,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:33,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:33,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:33,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520953483] [2022-11-16 11:26:33,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:33,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007304914] [2022-11-16 11:26:33,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007304914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:33,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:33,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:26:33,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549210483] [2022-11-16 11:26:33,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:33,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:26:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:33,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:26:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:26:33,902 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:26:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:34,589 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-16 11:26:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:26:34,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2022-11-16 11:26:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:34,593 INFO L225 Difference]: With dead ends: 50 [2022-11-16 11:26:34,593 INFO L226 Difference]: Without dead ends: 48 [2022-11-16 11:26:34,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:26:34,595 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:34,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:26:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-16 11:26:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-11-16 11:26:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:26:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2022-11-16 11:26:34,623 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 12 [2022-11-16 11:26:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:34,624 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2022-11-16 11:26:34,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:26:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2022-11-16 11:26:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 11:26:34,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:34,625 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:34,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:34,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:34,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:34,836 INFO L85 PathProgramCache]: Analyzing trace with hash 424345951, now seen corresponding path program 1 times [2022-11-16 11:26:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:34,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569016401] [2022-11-16 11:26:34,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:34,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:34,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:34,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973277650] [2022-11-16 11:26:34,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:34,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:34,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:34,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:34,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:26:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:34,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:26:34,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:35,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:35,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:35,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569016401] [2022-11-16 11:26:35,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:35,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973277650] [2022-11-16 11:26:35,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973277650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:35,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:35,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:26:35,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312941535] [2022-11-16 11:26:35,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:35,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:26:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:26:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:26:35,315 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:26:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:35,824 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-11-16 11:26:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:26:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2022-11-16 11:26:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:35,831 INFO L225 Difference]: With dead ends: 52 [2022-11-16 11:26:35,831 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 11:26:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:26:35,833 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:35,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:26:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 11:26:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-11-16 11:26:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:26:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2022-11-16 11:26:35,875 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 17 [2022-11-16 11:26:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:35,876 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2022-11-16 11:26:35,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:26:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2022-11-16 11:26:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:26:35,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:35,878 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:35,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:36,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:36,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1752711045, now seen corresponding path program 1 times [2022-11-16 11:26:36,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:36,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804073243] [2022-11-16 11:26:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:36,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:36,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:36,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472029983] [2022-11-16 11:26:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:36,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:36,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:36,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:26:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:36,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:26:36,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:26:36,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:26:36,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:36,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804073243] [2022-11-16 11:26:36,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:36,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472029983] [2022-11-16 11:26:36,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472029983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:36,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:36,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:26:36,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734209245] [2022-11-16 11:26:36,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:36,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:26:36,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:26:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:26:36,850 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:26:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:38,147 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2022-11-16 11:26:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:26:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2022-11-16 11:26:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:38,154 INFO L225 Difference]: With dead ends: 65 [2022-11-16 11:26:38,154 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 11:26:38,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:26:38,159 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:38,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:26:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 11:26:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-16 11:26:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 11:26:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2022-11-16 11:26:38,207 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 22 [2022-11-16 11:26:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:38,208 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2022-11-16 11:26:38,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:26:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2022-11-16 11:26:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 11:26:38,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:38,210 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:38,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:38,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:38,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 190158181, now seen corresponding path program 1 times [2022-11-16 11:26:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:38,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182133587] [2022-11-16 11:26:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:38,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:38,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:38,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005874666] [2022-11-16 11:26:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:38,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:38,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:26:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:26:38,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:26:38,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:26:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:38,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182133587] [2022-11-16 11:26:38,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:38,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005874666] [2022-11-16 11:26:38,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005874666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:38,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:38,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-16 11:26:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945503168] [2022-11-16 11:26:38,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:38,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:26:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:26:38,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:26:38,905 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-16 11:26:41,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:26:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:41,886 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2022-11-16 11:26:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 44 [2022-11-16 11:26:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:41,889 INFO L225 Difference]: With dead ends: 80 [2022-11-16 11:26:41,889 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 11:26:41,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:26:41,910 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:41,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 52 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 277 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:26:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 11:26:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-11-16 11:26:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.075) internal successors, (43), 43 states have internal predecessors, (43), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-16 11:26:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2022-11-16 11:26:41,949 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 44 [2022-11-16 11:26:41,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:41,950 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2022-11-16 11:26:41,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-16 11:26:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2022-11-16 11:26:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 11:26:41,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:41,952 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:41,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:42,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:42,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1122712219, now seen corresponding path program 2 times [2022-11-16 11:26:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:42,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355549012] [2022-11-16 11:26:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:42,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:42,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:42,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218531966] [2022-11-16 11:26:42,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:42,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:42,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:42,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:42,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:26:42,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:26:42,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:42,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:26:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-16 11:26:42,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 11:26:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:42,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355549012] [2022-11-16 11:26:42,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:42,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218531966] [2022-11-16 11:26:42,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218531966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:42,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:42,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-11-16 11:26:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038144867] [2022-11-16 11:26:42,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:42,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:26:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:26:42,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:42,748 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-16 11:26:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:43,744 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2022-11-16 11:26:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:26:43,745 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) Word has length 54 [2022-11-16 11:26:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:43,747 INFO L225 Difference]: With dead ends: 84 [2022-11-16 11:26:43,747 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 11:26:43,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:26:43,748 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:43,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 49 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:26:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 11:26:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-16 11:26:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.069767441860465) internal successors, (46), 46 states have internal predecessors, (46), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:26:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2022-11-16 11:26:43,797 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 54 [2022-11-16 11:26:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:43,798 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2022-11-16 11:26:43,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-16 11:26:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2022-11-16 11:26:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:26:43,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:43,810 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:43,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:44,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:44,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1898506858, now seen corresponding path program 1 times [2022-11-16 11:26:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:44,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765559667] [2022-11-16 11:26:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:44,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:44,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523413785] [2022-11-16 11:26:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:44,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:44,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:26:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:44,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:26:44,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 11:26:44,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:44,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:44,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765559667] [2022-11-16 11:26:44,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:44,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523413785] [2022-11-16 11:26:44,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523413785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:44,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:44,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-16 11:26:44,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736283037] [2022-11-16 11:26:44,851 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:44,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:26:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:26:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:26:44,853 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:26:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:45,253 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2022-11-16 11:26:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:26:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 65 [2022-11-16 11:26:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:45,258 INFO L225 Difference]: With dead ends: 85 [2022-11-16 11:26:45,260 INFO L226 Difference]: Without dead ends: 83 [2022-11-16 11:26:45,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:45,262 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:45,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:26:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-16 11:26:45,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-16 11:26:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.065217391304348) internal successors, (49), 49 states have internal predecessors, (49), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:26:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-11-16 11:26:45,317 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 65 [2022-11-16 11:26:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:45,318 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-11-16 11:26:45,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:26:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-11-16 11:26:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:26:45,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:45,324 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:45,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:45,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:45,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 161977518, now seen corresponding path program 1 times [2022-11-16 11:26:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:45,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646485790] [2022-11-16 11:26:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:45,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:45,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019005784] [2022-11-16 11:26:45,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:45,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:45,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:45,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:45,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:26:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:45,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:26:45,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-16 11:26:46,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-16 11:26:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:46,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646485790] [2022-11-16 11:26:46,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:46,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019005784] [2022-11-16 11:26:46,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019005784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:46,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:46,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-16 11:26:46,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672442360] [2022-11-16 11:26:46,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:46,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:26:46,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:46,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:26:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:26:46,921 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-16 11:26:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:48,129 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2022-11-16 11:26:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:26:48,132 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) Word has length 70 [2022-11-16 11:26:48,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:48,133 INFO L225 Difference]: With dead ends: 107 [2022-11-16 11:26:48,134 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 11:26:48,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:26:48,135 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:48,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 52 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:26:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 11:26:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-16 11:26:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 32 states have call successors, (32), 13 states have call predecessors, (32), 13 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-16 11:26:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2022-11-16 11:26:48,185 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 70 [2022-11-16 11:26:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:48,186 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2022-11-16 11:26:48,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-16 11:26:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2022-11-16 11:26:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 11:26:48,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:48,190 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 11:26:48,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:48,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1175438523, now seen corresponding path program 3 times [2022-11-16 11:26:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:48,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717025915] [2022-11-16 11:26:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:48,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:48,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443880026] [2022-11-16 11:26:48,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:26:48,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:48,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:48,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:48,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:26:48,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:26:48,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:48,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:26:48,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-16 11:26:48,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-16 11:26:49,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:49,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717025915] [2022-11-16 11:26:49,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:49,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443880026] [2022-11-16 11:26:49,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443880026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:49,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:49,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-16 11:26:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857190580] [2022-11-16 11:26:49,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:26:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:26:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:49,720 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-16 11:26:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:54,956 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2022-11-16 11:26:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:26:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 76 [2022-11-16 11:26:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:54,958 INFO L225 Difference]: With dead ends: 120 [2022-11-16 11:26:54,958 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 11:26:54,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:26:54,960 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:54,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 67 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 11:26:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 11:26:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-16 11:26:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 1.0625) internal successors, (68), 67 states have internal predecessors, (68), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-16 11:26:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2022-11-16 11:26:55,013 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 76 [2022-11-16 11:26:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:55,013 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2022-11-16 11:26:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-16 11:26:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2022-11-16 11:26:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:26:55,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:55,015 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:55,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:55,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:26:55,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:26:55,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash 253969820, now seen corresponding path program 2 times [2022-11-16 11:26:55,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:55,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489467462] [2022-11-16 11:26:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:55,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:55,259 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:26:55,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619942600] [2022-11-16 11:26:55,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:26:55,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:55,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:55,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:55,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:26:55,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:26:55,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:55,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 11:26:55,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 76 proven. 22 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-16 11:26:55,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-16 11:26:59,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:59,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489467462] [2022-11-16 11:26:59,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:26:59,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619942600] [2022-11-16 11:26:59,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619942600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:59,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:59,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-16 11:26:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744203841] [2022-11-16 11:26:59,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:59,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:26:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:26:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:26:59,047 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 16 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-16 11:27:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:01,595 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2022-11-16 11:27:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:27:01,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 92 [2022-11-16 11:27:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:01,597 INFO L225 Difference]: With dead ends: 126 [2022-11-16 11:27:01,597 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 11:27:01,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:27:01,598 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:01,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:27:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 11:27:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-16 11:27:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.042857142857143) internal successors, (73), 72 states have internal predecessors, (73), 32 states have call successors, (32), 19 states have call predecessors, (32), 19 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-16 11:27:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2022-11-16 11:27:01,638 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 92 [2022-11-16 11:27:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:01,639 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2022-11-16 11:27:01,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-16 11:27:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2022-11-16 11:27:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 11:27:01,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:01,641 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:01,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:27:01,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:27:01,842 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1712175254, now seen corresponding path program 1 times [2022-11-16 11:27:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:01,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892999905] [2022-11-16 11:27:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:01,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:01,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033057150] [2022-11-16 11:27:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:01,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:01,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:01,858 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:27:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:02,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 11:27:02,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-16 11:27:02,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:08,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:08,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892999905] [2022-11-16 11:27:08,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:08,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033057150] [2022-11-16 11:27:08,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033057150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:27:08,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:27:08,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-16 11:27:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284709815] [2022-11-16 11:27:08,469 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:27:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:27:08,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=238, Unknown=1, NotChecked=0, Total=306 [2022-11-16 11:27:08,471 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-16 11:27:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:09,596 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2022-11-16 11:27:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:27:09,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 129 [2022-11-16 11:27:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:09,602 INFO L225 Difference]: With dead ends: 141 [2022-11-16 11:27:09,602 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 11:27:09,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=91, Invalid=328, Unknown=1, NotChecked=0, Total=420 [2022-11-16 11:27:09,604 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:09,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:27:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 11:27:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-16 11:27:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 29 states have call successors, (29), 20 states have call predecessors, (29), 20 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-16 11:27:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2022-11-16 11:27:09,696 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 129 [2022-11-16 11:27:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:09,697 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2022-11-16 11:27:09,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-16 11:27:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2022-11-16 11:27:09,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-16 11:27:09,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:09,700 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:09,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:09,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:27:09,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1019061416, now seen corresponding path program 2 times [2022-11-16 11:27:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:09,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817982584] [2022-11-16 11:27:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:09,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:09,933 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:09,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318577601] [2022-11-16 11:27:09,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:09,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:09,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:09,938 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:09,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:27:10,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:27:10,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:10,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:27:10,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 74 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2022-11-16 11:27:10,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:11,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817982584] [2022-11-16 11:27:11,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:27:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318577601] [2022-11-16 11:27:11,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318577601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:27:11,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:27:11,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-16 11:27:11,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101596077] [2022-11-16 11:27:11,712 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:11,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:27:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:27:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:27:11,713 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-16 11:27:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:12,479 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2022-11-16 11:27:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:27:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) Word has length 151 [2022-11-16 11:27:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:12,482 INFO L225 Difference]: With dead ends: 156 [2022-11-16 11:27:12,482 INFO L226 Difference]: Without dead ends: 154 [2022-11-16 11:27:12,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:27:12,483 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:12,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 106 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:27:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-16 11:27:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-11-16 11:27:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 92 states have internal predecessors, (93), 37 states have call successors, (37), 25 states have call predecessors, (37), 25 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-16 11:27:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2022-11-16 11:27:12,524 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 151 [2022-11-16 11:27:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:12,524 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2022-11-16 11:27:12,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-16 11:27:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2022-11-16 11:27:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:27:12,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:12,527 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:12,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:27:12,730 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1062647964, now seen corresponding path program 2 times [2022-11-16 11:27:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606009696] [2022-11-16 11:27:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:12,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:27:12,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834028336] [2022-11-16 11:27:12,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:12,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:27:12,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:12,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:27:12,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:27:12,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:27:12,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:12,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 11:27:12,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 130 proven. 77 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2022-11-16 11:27:13,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 130 proven. 56 refuted. 21 times theorem prover too weak. 1431 trivial. 0 not checked. [2022-11-16 11:28:01,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:01,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606009696] [2022-11-16 11:28:01,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:28:01,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834028336] [2022-11-16 11:28:01,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834028336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:01,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:01,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2022-11-16 11:28:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925343470] [2022-11-16 11:28:01,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:28:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:28:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=353, Unknown=9, NotChecked=0, Total=462 [2022-11-16 11:28:01,080 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 14 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 12 states have call predecessors, (56), 14 states have call successors, (56) [2022-11-16 11:29:40,084 WARN L233 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 102 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:29:42,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:31:44,207 WARN L233 SmtUtils]: Spent 1.99m on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:31:46,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:31:48,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:31:50,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:31:52,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:38,940 WARN L233 SmtUtils]: Spent 1.73m on a formula simplification. DAG size of input: 107 DAG size of output: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:33:40,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:43,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:45,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:50,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:52,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:54,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:33:55,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:55,326 INFO L93 Difference]: Finished difference Result 178 states and 187 transitions. [2022-11-16 11:33:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:33:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 14 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 12 states have call predecessors, (56), 14 states have call successors, (56) Word has length 156 [2022-11-16 11:33:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:55,328 INFO L225 Difference]: With dead ends: 178 [2022-11-16 11:33:55,329 INFO L226 Difference]: Without dead ends: 157 [2022-11-16 11:33:55,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 358.1s TimeCoverageRelationStatistics Valid=178, Invalid=567, Unknown=11, NotChecked=0, Total=756 [2022-11-16 11:33:55,330 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 130 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:55,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 96 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 549 Invalid, 11 Unknown, 0 Unchecked, 29.0s Time] [2022-11-16 11:33:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-16 11:33:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2022-11-16 11:33:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-16 11:33:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 161 transitions. [2022-11-16 11:33:55,388 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 161 transitions. Word has length 156 [2022-11-16 11:33:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:55,388 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 161 transitions. [2022-11-16 11:33:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 14 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 12 states have call predecessors, (56), 14 states have call successors, (56) [2022-11-16 11:33:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 161 transitions. [2022-11-16 11:33:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-16 11:33:55,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:55,391 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:55,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:55,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash -965723090, now seen corresponding path program 3 times [2022-11-16 11:33:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212133326] [2022-11-16 11:33:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:55,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:55,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291579092] [2022-11-16 11:33:55,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:33:55,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:55,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:55,609 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:55,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:33:57,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:33:57,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:57,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 11:33:57,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 381 proven. 85 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2022-11-16 11:34:47,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 244 proven. 39 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2022-11-16 11:34:52,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:52,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212133326] [2022-11-16 11:34:52,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:34:52,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291579092] [2022-11-16 11:34:52,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291579092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:53,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:53,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-11-16 11:34:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619073285] [2022-11-16 11:34:53,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:53,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:34:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:34:53,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=240, Unknown=2, NotChecked=0, Total=306 [2022-11-16 11:34:53,003 INFO L87 Difference]: Start difference. First operand 155 states and 161 transitions. Second operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-16 11:35:01,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:06,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:08,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:12,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:14,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:23,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:25,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:28,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:35:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:28,927 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2022-11-16 11:35:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:35:28,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 10 states have call successors, (31) Word has length 178 [2022-11-16 11:35:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:28,928 INFO L225 Difference]: With dead ends: 163 [2022-11-16 11:35:28,928 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:35:28,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=126, Invalid=424, Unknown=2, NotChecked=0, Total=552 [2022-11-16 11:35:28,930 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 62 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:28,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 76 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 255 Invalid, 5 Unknown, 0 Unchecked, 23.1s Time] [2022-11-16 11:35:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:35:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:35:28,933 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 11:35:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:35:28,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2022-11-16 11:35:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:35:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 9 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-16 11:35:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:35:28,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:35:28,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:35:28,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:29,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:35:29,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 11:35:35,784 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 159 DAG size of output: 71 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:36:03,513 WARN L233 SmtUtils]: Spent 27.64s on a formula simplification. DAG size of input: 241 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:36:22,752 WARN L233 SmtUtils]: Spent 19.23s on a formula simplification. DAG size of input: 246 DAG size of output: 74 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:37:25,476 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 243 DAG size of output: 117 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:37:37,871 WARN L233 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 246 DAG size of output: 74 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:38:51,791 WARN L233 SmtUtils]: Spent 1.23m on a formula simplification. DAG size of input: 243 DAG size of output: 120 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:39:19,142 WARN L233 SmtUtils]: Spent 27.35s on a formula simplification. DAG size of input: 217 DAG size of output: 96 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:39:30,705 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 156 DAG size of output: 71 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:40:59,011 WARN L233 SmtUtils]: Spent 1.47m on a formula simplification. DAG size of input: 243 DAG size of output: 142 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:40:59,018 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse3 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse5 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (let ((.cse4 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse3 (<= (+ (* 65536 (div (+ .cse4 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse5) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse4 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))))) (and .cse3 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse5 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-16 11:40:59,019 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 11:40:59,019 INFO L895 garLoopResultBuilder]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse3 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse5 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (let ((.cse4 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse3 (<= (+ (* 65536 (div (+ .cse4 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse5) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse4 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))))) (and .cse3 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse5 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-16 11:40:59,019 INFO L902 garLoopResultBuilder]: At program point L54(lines 22 55) the Hoare annotation is: true [2022-11-16 11:40:59,019 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-11-16 11:40:59,019 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-16 11:40:59,020 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse1 (* |ULTIMATE.start_main_~y~0#1| 24))) (let ((.cse2 (- |ULTIMATE.start_main_~a~0#1|))) (or (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (<= (+ (* 65536 (div (+ .cse2 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse2 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-16 11:40:59,020 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse8 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse10 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse7 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse6 (* |ULTIMATE.start_main_~z~0#1| 4)) (.cse5 (* (* .cse0 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse4 (* .cse0 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 18) .cse1 (* 2 .cse2) (* .cse3 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse4 18) .cse5 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse3 6 .cse2) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (or (= (+ .cse1 (* 3 |ULTIMATE.start_main_~z~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) .cse7 (* |ULTIMATE.start_main_~y~0#1| 10) 10)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (= (+ .cse1 (* .cse3 16) 134 (* 32 .cse2)) (+ (* .cse0 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse0 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) .cse6 .cse5 (* 72 .cse4))) (let ((.cse9 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse8 (<= (+ (* 65536 (div (+ .cse9 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse10) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse9 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (and .cse8 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) .cse10 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-16 11:40:59,021 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse9 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse11 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse8 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse4 (* .cse8 18)) (.cse5 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse3 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse0 (* .cse8 |ULTIMATE.start_main_~z~0#1|)) (.cse7 (* |ULTIMATE.start_main_~z~0#1| 4)) (.cse1 (* (* .cse8 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse2 (* .cse8 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* 18 .cse0) (* 94 |ULTIMATE.start_main_~y~0#1|) .cse1 (* |ULTIMATE.start_main_~z~0#1| 26) (* .cse2 36) (* |ULTIMATE.start_main_~x~0#1| 54)) (+ (* 8 .cse3) .cse4 .cse5 (* .cse6 8) 38)) (= (+ .cse4 .cse5 (* 2 .cse3) (* .cse6 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse2 18) .cse1 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse6 6 .cse3) (+ .cse7 (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ .cse5 (* .cse6 16) 134 (* 32 .cse3)) (+ (* .cse8 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 .cse0) (* |ULTIMATE.start_main_~y~0#1| 226) .cse7 .cse1 (* 72 .cse2))) (let ((.cse10 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse9 (<= (+ (* 65536 (div (+ .cse10 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse11) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse10 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|))))))) (and .cse9 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~x~0#1| 0) .cse11 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-16 11:40:59,021 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 11:40:59,021 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 45) the Hoare annotation is: (let ((.cse3 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse5 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (let ((.cse4 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse3 (<= (+ (* 65536 (div (+ .cse4 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse5) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse4 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))))) (and .cse3 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse5 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-16 11:40:59,021 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 11:40:59,021 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 45) the Hoare annotation is: (or (let ((.cse1 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse3 (* |ULTIMATE.start_main_~z~0#1| 4))) (and (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ .cse0 6 .cse2) (+ .cse3 .cse1 (* |ULTIMATE.start_main_~y~0#1| 24))) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* .cse0 16) 134 (* 32 .cse2)) (let ((.cse4 (div |ULTIMATE.start_main_~z~0#1| 6))) (+ (* .cse4 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse4 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) .cse3 (* (* .cse4 |ULTIMATE.start_main_~x~0#1|) 18) (* 72 (* .cse4 |ULTIMATE.start_main_~y~0#1|))))) (let ((.cse5 (- |ULTIMATE.start_main_~a~0#1|))) (or (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (<= (+ (* 65536 (div (+ .cse5 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse5 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-16 11:40:59,021 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 11:40:59,022 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-11-16 11:40:59,022 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse2 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse2))) (.cse1 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) .cse0 (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) .cse1) (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse0 (= 6 .cse2) .cse1)))) [2022-11-16 11:40:59,022 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse1 (* |ULTIMATE.start_main_~y~0#1| 24))) (let ((.cse2 (- |ULTIMATE.start_main_~a~0#1|))) (or (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (<= (+ (* 65536 (div (+ .cse2 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse2 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-16 11:40:59,022 INFO L899 garLoopResultBuilder]: For program point L37(lines 32 45) no Hoare annotation was computed. [2022-11-16 11:40:59,023 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse12 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse10 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse11 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse14 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse9 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse4 (* .cse9 18)) (.cse8 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse5 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse3 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse0 (* .cse9 |ULTIMATE.start_main_~z~0#1|)) (.cse7 (* |ULTIMATE.start_main_~z~0#1| 4)) (.cse1 (* (* .cse9 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse2 (* .cse9 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* 18 .cse0) (* 94 |ULTIMATE.start_main_~y~0#1|) .cse1 (* |ULTIMATE.start_main_~z~0#1| 26) (* .cse2 36) (* |ULTIMATE.start_main_~x~0#1| 54)) (+ (* 8 .cse3) .cse4 .cse5 (* .cse6 8) 38)) (= (+ .cse4 .cse5 (* 2 .cse3) (* .cse6 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse2 18) .cse1 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse6 6 .cse3) (+ .cse7 .cse8 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (or (= (+ .cse5 (* 3 |ULTIMATE.start_main_~z~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) .cse8 (* |ULTIMATE.start_main_~y~0#1| 10) 10)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (= (+ .cse5 (* .cse6 16) 134 (* 32 .cse3)) (+ (* .cse9 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 .cse0) (* |ULTIMATE.start_main_~y~0#1| 226) .cse7 .cse1 (* 72 .cse2))) (or (= .cse10 (+ 2 .cse11)) (< |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~n~0#1|)) (let ((.cse13 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse12 (<= (+ (* 65536 (div (+ .cse13 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse14) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse13 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (and .cse12 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ .cse10 (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ .cse11 (* 2 |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~x~0#1| 0) .cse14 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-16 11:40:59,023 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-16 11:40:59,023 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-16 11:40:59,023 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-16 11:40:59,024 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-16 11:40:59,024 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-16 11:40:59,024 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-16 11:40:59,027 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 11:40:59,030 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:40:59,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:40:59 BoogieIcfgContainer [2022-11-16 11:40:59,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:40:59,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:40:59,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:40:59,055 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:40:59,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:26:32" (3/4) ... [2022-11-16 11:40:59,059 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:40:59,066 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 11:40:59,071 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-16 11:40:59,071 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:40:59,071 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:40:59,072 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:40:59,116 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:40:59,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:40:59,118 INFO L158 Benchmark]: Toolchain (without parser) took 867931.65ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 93.9MB in the beginning and 95.4MB in the end (delta: -1.5MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-11-16 11:40:59,118 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:40:59,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.64ms. Allocated memory is still 132.1MB. Free memory was 93.7MB in the beginning and 106.6MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:40:59,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.45ms. Allocated memory is still 132.1MB. Free memory was 106.4MB in the beginning and 104.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:40:59,119 INFO L158 Benchmark]: Boogie Preprocessor took 51.13ms. Allocated memory is still 132.1MB. Free memory was 104.9MB in the beginning and 103.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:40:59,120 INFO L158 Benchmark]: RCFGBuilder took 480.61ms. Allocated memory is still 132.1MB. Free memory was 103.7MB in the beginning and 92.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:40:59,126 INFO L158 Benchmark]: TraceAbstraction took 866859.23ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 91.3MB in the beginning and 98.5MB in the end (delta: -7.2MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2022-11-16 11:40:59,128 INFO L158 Benchmark]: Witness Printer took 62.86ms. Allocated memory is still 159.4MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:40:59,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.64ms. Allocated memory is still 132.1MB. Free memory was 93.7MB in the beginning and 106.6MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.45ms. Allocated memory is still 132.1MB. Free memory was 106.4MB in the beginning and 104.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.13ms. Allocated memory is still 132.1MB. Free memory was 104.9MB in the beginning and 103.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.61ms. Allocated memory is still 132.1MB. Free memory was 103.7MB in the beginning and 92.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 866859.23ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 91.3MB in the beginning and 98.5MB in the end (delta: -7.2MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. * Witness Printer took 62.86ms. Allocated memory is still 159.4MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.1MB). 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 866.8s, OverallIterations: 15, TraceHistogramMax: 33, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 408.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 329.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 mSolverCounterUnknown, 401 SdHoareTripleChecker+Valid, 67.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 296 mSDsluCounter, 930 SdHoareTripleChecker+Invalid, 66.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 557 mSDsCounter, 670 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4548 IncrementalHoareTripleChecker+Invalid, 5235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 670 mSolverCounterUnsat, 373 mSDtfsCounter, 4548 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1950 GetRequests, 1724 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 400.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=14, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 83 PreInvPairs, 149 NumberOfFragments, 1836 HoareAnnotationTreeSize, 83 FomulaSimplifications, 1388 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 11297 FormulaSimplificationTreeSizeReductionInter, 329.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 121.3s InterpolantComputationTime, 1080 NumberOfCodeBlocks, 914 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1776 ConstructedInterpolants, 0 QuantifiedInterpolants, 12319 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2170 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 25 InterpolantComputations, 2 PerfectInterpolantSequences, 12642/13421 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: 32]: Loop Invariant Derived loop invariant: ((((y * z + 2 * z == 6 + y * 12 + x * 18 && y * z + 6 + z * z == z * 4 + x * 18 + y * 24) && z == 6 + 6 * n) && n <= a + 1) && (((0 <= 65536 + a && 65536 * ((-a + -32769) / 65536) + a + 65537 <= 0) && a < 0) || ((a < 65536 && 32769 + 65536 * ((-a + -1) / 65536) + a <= 0) && 0 <= a))) || ((((((0 <= 65536 + a && n == 0) && 2 * y + 6 * a + 10 == a * z + 2 * z) && x == 0) && a < 0) && !(a % 65536 <= 32767)) && 6 == z) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 11:40:59,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dee416-13ed-4796-b5dd-27985c3eab2d/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