./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN --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 4ecd26f30dcf2e00e51585057257a3ebe53fdc2d12652276addf710ad43d7dfd --- 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-6b4ec56 [2022-11-20 11:40:46,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:40:46,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:40:46,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:40:46,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:40:46,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:40:46,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:40:46,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:40:46,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:40:46,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:40:46,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:40:46,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:40:46,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:40:46,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:40:46,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:40:46,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:40:46,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:40:46,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:40:46,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:40:46,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:40:46,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:40:46,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:40:46,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:40:46,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:40:46,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:40:46,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:40:46,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:40:46,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:40:46,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:40:46,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:40:46,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:40:46,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:40:46,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:40:46,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:40:46,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:40:46,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:40:46,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:40:46,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:40:46,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:40:46,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:40:46,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:40:46,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:40:46,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:40:46,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:40:46,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:40:46,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:40:46,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:40:46,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:40:46,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:40:46,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:40:46,943 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:40:46,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:40:46,943 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:40:46,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:40:46,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:40:46,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:40:46,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:40:46,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:40:46,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:40:46,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:40:46,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:40:46,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:40:46,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:40:46,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:40:46,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:40:46,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:40:46,946 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:40:46,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:40:46,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:40:46,946 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_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ecd26f30dcf2e00e51585057257a3ebe53fdc2d12652276addf710ad43d7dfd [2022-11-20 11:40:47,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:40:47,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:40:47,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:40:47,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:40:47,270 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:40:47,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c [2022-11-20 11:40:50,348 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:40:50,543 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:40:50,543 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c [2022-11-20 11:40:50,550 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/data/9abaaa88e/ab9659a5c5d446c7affea92c38c6fa6a/FLAGad241b905 [2022-11-20 11:40:50,564 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/data/9abaaa88e/ab9659a5c5d446c7affea92c38c6fa6a [2022-11-20 11:40:50,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:40:50,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:40:50,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:40:50,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:40:50,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:40:50,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43174e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50, skipping insertion in model container [2022-11-20 11:40:50,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:40:50,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:40:50,738 WARN L237 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_933af5bd-afff-40ac-8786-c60d4b1a2528/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c[588,601] [2022-11-20 11:40:50,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:40:50,775 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:40:50,788 WARN L237 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_933af5bd-afff-40ac-8786-c60d4b1a2528/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound100.c[588,601] [2022-11-20 11:40:50,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:40:50,813 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:40:50,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50 WrapperNode [2022-11-20 11:40:50,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:40:50,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:40:50,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:40:50,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:40:50,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,848 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-20 11:40:50,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:40:50,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:40:50,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:40:50,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:40:50,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:40:50,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:40:50,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:40:50,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:40:50,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (1/1) ... [2022-11-20 11:40:50,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:40:50,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:50,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:40:50,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:40:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:40:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:40:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:40:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:40:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:40:50,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:40:51,032 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:40:51,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:40:51,207 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:40:51,214 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:40:51,214 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:40:51,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:51 BoogieIcfgContainer [2022-11-20 11:40:51,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:40:51,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:40:51,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:40:51,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:40:51,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:40:50" (1/3) ... [2022-11-20 11:40:51,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b536d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:51, skipping insertion in model container [2022-11-20 11:40:51,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:50" (2/3) ... [2022-11-20 11:40:51,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b536d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:51, skipping insertion in model container [2022-11-20 11:40:51,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:51" (3/3) ... [2022-11-20 11:40:51,225 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound100.c [2022-11-20 11:40:51,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:40:51,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:40:51,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:40:51,303 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;@50b4d985, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:40:51,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:40:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-20 11:40:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:40:51,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:51,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:51,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-11-20 11:40:51,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:51,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945756227] [2022-11-20 11:40:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:51,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945756227] [2022-11-20 11:40:51,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945756227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:51,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:51,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:40:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507011458] [2022-11-20 11:40:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:40:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:40:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:40:51,506 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:51,540 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-11-20 11:40:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:40:51,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:40:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:51,555 INFO L225 Difference]: With dead ends: 51 [2022-11-20 11:40:51,555 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 11:40:51,560 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 [2022-11-20 11:40:51,567 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-11-20 11:40:51,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:40:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 11:40:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 11:40:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-20 11:40:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-11-20 11:40:51,613 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-11-20 11:40:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:51,614 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-11-20 11:40:51,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-11-20 11:40:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:40:51,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:51,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:51,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:40:51,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-11-20 11:40:51,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:51,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545999204] [2022-11-20 11:40:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:51,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:51,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545999204] [2022-11-20 11:40:51,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545999204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:51,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:51,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:40:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925504494] [2022-11-20 11:40:51,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:40:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:40:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:51,976 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:52,080 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-11-20 11:40:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:40:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:40:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:52,082 INFO L225 Difference]: With dead ends: 29 [2022-11-20 11:40:52,082 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:40:52,083 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 [2022-11-20 11:40:52,084 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:52,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:40:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:40:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 11:40:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-20 11:40:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-11-20 11:40:52,113 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-11-20 11:40:52,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:52,113 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-11-20 11:40:52,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:52,114 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-11-20 11:40:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:40:52,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:52,115 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:52,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:40:52,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-11-20 11:40:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:52,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168048047] [2022-11-20 11:40:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:52,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:52,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:40:52,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009238405] [2022-11-20 11:40:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:52,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:52,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:52,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:40:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:52,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:40:52,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:52,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168048047] [2022-11-20 11:40:52,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:40:52,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009238405] [2022-11-20 11:40:52,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009238405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:52,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:40:52,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 11:40:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472170389] [2022-11-20 11:40:52,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:52,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:40:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:40:52,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:40:52,709 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-20 11:40:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:53,232 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-20 11:40:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:40:53,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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 14 [2022-11-20 11:40:53,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:53,236 INFO L225 Difference]: With dead ends: 52 [2022-11-20 11:40:53,236 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 11:40:53,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:40:53,238 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:53,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:40:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 11:40:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-20 11:40:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-11-20 11:40:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2022-11-20 11:40:53,267 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 14 [2022-11-20 11:40:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:53,267 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2022-11-20 11:40:53,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-20 11:40:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2022-11-20 11:40:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:40:53,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:53,269 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:53,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:53,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-11-20 11:40:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310749647] [2022-11-20 11:40:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:53,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:40:53,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082054589] [2022-11-20 11:40:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:53,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:53,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:53,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:53,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:40:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:53,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:40:53,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:40:53,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:40:53,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:53,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310749647] [2022-11-20 11:40:53,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:40:53,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082054589] [2022-11-20 11:40:53,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082054589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:53,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:40:53,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 11:40:53,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288516113] [2022-11-20 11:40:53,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:53,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:40:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:40:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:40:53,821 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:40:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:54,168 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-11-20 11:40:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:40:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2022-11-20 11:40:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:54,172 INFO L225 Difference]: With dead ends: 54 [2022-11-20 11:40:54,172 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 11:40:54,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:40:54,173 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:54,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 47 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:40:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 11:40:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-20 11:40:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 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) [2022-11-20 11:40:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-20 11:40:54,206 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 19 [2022-11-20 11:40:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:54,207 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-20 11:40:54,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:40:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-20 11:40:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:40:54,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:54,209 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:54,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:40:54,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 11:40:54,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:54,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-11-20 11:40:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:54,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772194324] [2022-11-20 11:40:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:54,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:54,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:40:54,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258218243] [2022-11-20 11:40:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:54,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:54,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:54,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:54,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:40:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:54,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:40:54,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:40:54,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:40:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772194324] [2022-11-20 11:40:54,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:40:54,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258218243] [2022-11-20 11:40:54,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258218243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:54,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:40:54,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 11:40:54,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861777868] [2022-11-20 11:40:54,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:54,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:40:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:40:54,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:40:54,897 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (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) [2022-11-20 11:40:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:56,036 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-20 11:40:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:40:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (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 24 [2022-11-20 11:40:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:56,038 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:40:56,038 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 11:40:56,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:40:56,040 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:56,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:40:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 11:40:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-20 11:40:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 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) [2022-11-20 11:40:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2022-11-20 11:40:56,071 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2022-11-20 11:40:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:56,071 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2022-11-20 11:40:56,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (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) [2022-11-20 11:40:56,072 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2022-11-20 11:40:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:40:56,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:56,074 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:56,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:40:56,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:56,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 1 times [2022-11-20 11:40:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:56,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283819577] [2022-11-20 11:40:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:56,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:40:56,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245969770] [2022-11-20 11:40:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:56,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:56,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:56,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:56,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:40:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:56,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:40:56,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:40:56,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:40:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:40:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:56,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283819577] [2022-11-20 11:40:56,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:40:56,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245969770] [2022-11-20 11:40:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245969770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:40:56,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:40:56,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-20 11:40:56,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497933202] [2022-11-20 11:40:56,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:40:56,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:40:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:40:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:40:56,760 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:40:59,207 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 [] [2022-11-20 11:40:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:59,627 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2022-11-20 11:40:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:40:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 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 46 [2022-11-20 11:40:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:59,630 INFO L225 Difference]: With dead ends: 82 [2022-11-20 11:40:59,630 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 11:40:59,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:40:59,631 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 80 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:59,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 62 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:40:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 11:40:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-11-20 11:40:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 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) [2022-11-20 11:40:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-11-20 11:40:59,680 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 46 [2022-11-20 11:40:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:59,681 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-11-20 11:40:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:40:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-11-20 11:40:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:40:59,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:59,685 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:59,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:59,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1498221753, now seen corresponding path program 2 times [2022-11-20 11:40:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:59,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172514851] [2022-11-20 11:40:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:59,903 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:40:59,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106516048] [2022-11-20 11:40:59,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:40:59,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:59,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:59,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:59,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:40:59,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:40:59,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:40:59,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:40:59,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 11:41:00,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 11:41:00,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:00,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172514851] [2022-11-20 11:41:00,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:00,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106516048] [2022-11-20 11:41:00,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106516048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:00,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:41:00,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 11:41:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844037792] [2022-11-20 11:41:00,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:41:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:41:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:41:00,346 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 11:41:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:01,151 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2022-11-20 11:41:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:41:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 56 [2022-11-20 11:41:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:01,153 INFO L225 Difference]: With dead ends: 86 [2022-11-20 11:41:01,153 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 11:41:01,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:41:01,154 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:01,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:41:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 11:41:01,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-20 11:41:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 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) [2022-11-20 11:41:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-11-20 11:41:01,183 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 56 [2022-11-20 11:41:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:01,183 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-11-20 11:41:01,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 11:41:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-11-20 11:41:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:41:01,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:01,185 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, 1, 1] [2022-11-20 11:41:01,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 11:41:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:01,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-11-20 11:41:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:01,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119074616] [2022-11-20 11:41:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:01,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:01,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766532217] [2022-11-20 11:41:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:01,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:01,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:01,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:41:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:01,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:41:01,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 11:41:01,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 11:41:02,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:02,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119074616] [2022-11-20 11:41:02,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:02,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766532217] [2022-11-20 11:41:02,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766532217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:02,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:41:02,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-20 11:41:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223567760] [2022-11-20 11:41:02,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:41:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:02,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:41:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:41:02,112 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 11:41:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:02,948 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2022-11-20 11:41:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:41:02,949 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2022-11-20 11:41:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:02,953 INFO L225 Difference]: With dead ends: 95 [2022-11-20 11:41:02,953 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 11:41:02,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:41:02,956 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:02,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 150 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:41:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 11:41:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-20 11:41:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 11:41:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-11-20 11:41:03,026 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 67 [2022-11-20 11:41:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-11-20 11:41:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 11:41:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-11-20 11:41:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 11:41:03,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:03,031 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, 1, 1] [2022-11-20 11:41:03,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:03,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-11-20 11:41:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:03,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088304348] [2022-11-20 11:41:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:03,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:03,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333405269] [2022-11-20 11:41:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:03,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:03,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:03,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:41:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:03,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:41:03,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 11:41:03,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:03,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:03,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088304348] [2022-11-20 11:41:03,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:03,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333405269] [2022-11-20 11:41:03,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333405269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:03,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:41:03,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-20 11:41:03,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823388687] [2022-11-20 11:41:03,803 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:41:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:41:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:41:03,804 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:41:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:04,149 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2022-11-20 11:41:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:41:04,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2022-11-20 11:41:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:04,156 INFO L225 Difference]: With dead ends: 97 [2022-11-20 11:41:04,157 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 11:41:04,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:41:04,161 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:04,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 95 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:41:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 11:41:04,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-20 11:41:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 11:41:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2022-11-20 11:41:04,230 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 72 [2022-11-20 11:41:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:04,231 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2022-11-20 11:41:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:41:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2022-11-20 11:41:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 11:41:04,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:04,233 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:04,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:04,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:04,438 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash -322800313, now seen corresponding path program 3 times [2022-11-20 11:41:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:04,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688090328] [2022-11-20 11:41:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:04,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:04,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387543359] [2022-11-20 11:41:04,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:41:04,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:04,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:04,450 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:04,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:41:04,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:41:04,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:04,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 11:41:04,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 11:41:04,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 11:41:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:05,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688090328] [2022-11-20 11:41:05,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:05,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387543359] [2022-11-20 11:41:05,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387543359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:05,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:41:05,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-20 11:41:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59924367] [2022-11-20 11:41:05,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:41:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:41:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:41:05,530 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 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) [2022-11-20 11:41:09,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:41:12,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:41:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:12,477 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2022-11-20 11:41:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:41:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 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 78 [2022-11-20 11:41:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:12,478 INFO L225 Difference]: With dead ends: 110 [2022-11-20 11:41:12,479 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 11:41:12,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:41:12,480 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 95 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:12,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 84 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 399 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 11:41:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 11:41:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-11-20 11:41:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 11:41:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2022-11-20 11:41:12,519 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 78 [2022-11-20 11:41:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:12,520 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2022-11-20 11:41:12,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 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) [2022-11-20 11:41:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2022-11-20 11:41:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 11:41:12,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:12,529 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:12,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:12,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:41:12,734 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:12,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-11-20 11:41:12,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:12,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752181860] [2022-11-20 11:41:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:12,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:12,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:12,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071115871] [2022-11-20 11:41:12,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:41:12,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:12,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:12,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:12,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:41:12,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:41:12,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 11:41:12,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-20 11:41:13,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:14,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:14,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752181860] [2022-11-20 11:41:14,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:14,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071115871] [2022-11-20 11:41:14,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071115871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:14,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:41:14,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-20 11:41:14,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892456610] [2022-11-20 11:41:14,775 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:41:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:41:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:41:14,778 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-20 11:41:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:15,215 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-11-20 11:41:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:41:15,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 99 [2022-11-20 11:41:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:15,216 INFO L225 Difference]: With dead ends: 111 [2022-11-20 11:41:15,217 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 11:41:15,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:41:15,218 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:15,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 86 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:41:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 11:41:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 11:41:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-20 11:41:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2022-11-20 11:41:15,250 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 99 [2022-11-20 11:41:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:15,251 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2022-11-20 11:41:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-20 11:41:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2022-11-20 11:41:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 11:41:15,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:15,253 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:15,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:15,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:15,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2022-11-20 11:41:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:15,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69306088] [2022-11-20 11:41:15,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:15,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:15,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:15,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229650406] [2022-11-20 11:41:15,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:41:15,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:15,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:15,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:41:15,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:41:15,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:15,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:41:15,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-11-20 11:41:16,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-20 11:41:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:18,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69306088] [2022-11-20 11:41:18,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:18,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229650406] [2022-11-20 11:41:18,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229650406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:18,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:41:18,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-11-20 11:41:18,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076770598] [2022-11-20 11:41:18,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:18,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:41:18,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:41:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:41:18,685 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:41:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:23,539 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-11-20 11:41:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:41:23,539 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 121 [2022-11-20 11:41:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:23,541 INFO L225 Difference]: With dead ends: 127 [2022-11-20 11:41:23,541 INFO L226 Difference]: Without dead ends: 125 [2022-11-20 11:41:23,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:41:23,542 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:23,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 108 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 11:41:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-20 11:41:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2022-11-20 11:41:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 24 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-20 11:41:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2022-11-20 11:41:23,579 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 121 [2022-11-20 11:41:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:23,579 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2022-11-20 11:41:23,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-20 11:41:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2022-11-20 11:41:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 11:41:23,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:23,581 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:23,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 11:41:23,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:41:23,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-11-20 11:41:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:23,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438692679] [2022-11-20 11:41:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:23,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:23,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105844341] [2022-11-20 11:41:23,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:41:23,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:23,811 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:23,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:41:25,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:41:25,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:25,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 11:41:25,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 181 proven. 69 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-20 11:41:34,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-11-20 11:41:37,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:37,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438692679] [2022-11-20 11:41:37,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:37,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105844341] [2022-11-20 11:41:37,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105844341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:37,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:41:37,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-11-20 11:41:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607832074] [2022-11-20 11:41:37,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:41:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:41:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:41:37,311 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-20 11:41:42,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:41:46,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:41:48,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:41:50,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:41:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:50,941 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-20 11:41:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:41:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 126 [2022-11-20 11:41:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:50,943 INFO L225 Difference]: With dead ends: 112 [2022-11-20 11:41:50,943 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 11:41:50,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:41:50,944 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 96 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:50,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 53 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 199 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-20 11:41:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 11:41:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-20 11:41:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 24 states have call successors, (24), 18 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-20 11:41:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2022-11-20 11:41:50,988 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 126 [2022-11-20 11:41:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:50,988 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2022-11-20 11:41:50,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-20 11:41:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2022-11-20 11:41:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 11:41:50,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:50,990 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, 1, 1] [2022-11-20 11:41:51,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 11:41:51,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:41:51,197 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1520954085, now seen corresponding path program 1 times [2022-11-20 11:41:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:51,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376507123] [2022-11-20 11:41:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:51,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:51,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163266867] [2022-11-20 11:41:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:51,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:51,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:51,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:41:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:51,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 11:41:51,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-20 11:41:51,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376507123] [2022-11-20 11:41:52,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:41:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163266867] [2022-11-20 11:41:52,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163266867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:52,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:41:52,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-20 11:41:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483721972] [2022-11-20 11:41:52,619 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:52,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:41:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:41:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:41:52,621 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2022-11-20 11:41:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:53,211 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2022-11-20 11:41:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:41:53,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 131 [2022-11-20 11:41:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:53,213 INFO L225 Difference]: With dead ends: 139 [2022-11-20 11:41:53,213 INFO L226 Difference]: Without dead ends: 123 [2022-11-20 11:41:53,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:41:53,214 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:53,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 108 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:41:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-20 11:41:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-20 11:41:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 74 states have internal predecessors, (75), 29 states have call successors, (29), 20 states have call predecessors, (29), 19 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-20 11:41:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2022-11-20 11:41:53,279 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 131 [2022-11-20 11:41:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2022-11-20 11:41:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2022-11-20 11:41:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2022-11-20 11:41:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 11:41:53,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:53,282 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, 1, 1] [2022-11-20 11:41:53,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:53,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:53,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1608982942, now seen corresponding path program 2 times [2022-11-20 11:41:53,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:53,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217641782] [2022-11-20 11:41:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:53,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:53,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:41:53,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117502990] [2022-11-20 11:41:53,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:41:53,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:53,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:53,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:53,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:41:53,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:41:53,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-20 11:41:53,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 204 proven. 78 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-11-20 11:41:54,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:42:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 204 proven. 71 refuted. 7 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-11-20 11:42:02,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:02,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217641782] [2022-11-20 11:42:02,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:42:02,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117502990] [2022-11-20 11:42:02,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117502990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:42:02,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:42:02,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2022-11-20 11:42:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872691166] [2022-11-20 11:42:02,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:42:02,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:42:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:42:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=425, Unknown=2, NotChecked=0, Total=552 [2022-11-20 11:42:02,929 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 24 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 16 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 14 states have call predecessors, (56), 16 states have call successors, (56) [2022-11-20 11:42:06,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:42:40,545 WARN L233 SmtUtils]: Spent 33.07s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:42:42,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:42:44,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:42:46,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:42:48,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:42:50,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:42:52,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:43:23,200 WARN L233 SmtUtils]: Spent 30.69s on a formula simplification that was a NOOP. DAG size: 106 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:43:25,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:43:27,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:43:30,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:43:57,386 WARN L233 SmtUtils]: Spent 23.25s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:43:59,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:01,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:04,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:06,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:08,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:10,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:12,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:15,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:17,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:19,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:21,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:23,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:25,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:27,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:53,476 WARN L233 SmtUtils]: Spent 20.31s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:44:55,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:57,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:44:59,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:45:00,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:02,449 WARN L233 SmtUtils]: Spent 57.37s on a formula simplification. DAG size of input: 106 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:46:04,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:06,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:08,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:25,172 WARN L233 SmtUtils]: Spent 14.64s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:46:27,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:30,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:32,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:34,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:36,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:39,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:46:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:39,252 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2022-11-20 11:46:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:46:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 16 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 14 states have call predecessors, (56), 16 states have call successors, (56) Word has length 158 [2022-11-20 11:46:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:39,254 INFO L225 Difference]: With dead ends: 173 [2022-11-20 11:46:39,254 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:46:39,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 202.1s TimeCoverageRelationStatistics Valid=248, Invalid=735, Unknown=9, NotChecked=0, Total=992 [2022-11-20 11:46:39,255 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 37 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 148 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:39,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 133 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 822 Invalid, 35 Unknown, 0 Unchecked, 81.4s Time] [2022-11-20 11:46:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:46:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:46:39,256 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) [2022-11-20 11:46:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:46:39,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2022-11-20 11:46:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:39,257 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:46:39,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.111111111111111) internal successors, (38), 19 states have internal predecessors, (38), 16 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 14 states have call predecessors, (56), 16 states have call successors, (56) [2022-11-20 11:46:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:46:39,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:46:39,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:46:39,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:39,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:39,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:46:50,762 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 243 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:47:04,027 WARN L233 SmtUtils]: Spent 12.56s on a formula simplification. DAG size of input: 233 DAG size of output: 43 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:47:17,565 WARN L233 SmtUtils]: Spent 13.53s on a formula simplification. DAG size of input: 232 DAG size of output: 76 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:47:29,431 WARN L233 SmtUtils]: Spent 11.86s on a formula simplification. DAG size of input: 243 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:47:48,612 WARN L233 SmtUtils]: Spent 19.18s on a formula simplification. DAG size of input: 234 DAG size of output: 68 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:48:30,835 WARN L233 SmtUtils]: Spent 41.07s on a formula simplification. DAG size of input: 217 DAG size of output: 127 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:49:38,504 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 216 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:49:53,293 WARN L233 SmtUtils]: Spent 14.78s on a formula simplification. DAG size of input: 233 DAG size of output: 43 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:49:53,297 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:49:53,298 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |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|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 11:49:53,299 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (let ((.cse6 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse13 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse7 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse12 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (let ((.cse1 (* 2 .cse12)) (.cse3 (* .cse7 4)) (.cse0 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse4 (* .cse13 6)) (.cse10 (* 180 .cse2)) (.cse5 (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) 18)) (.cse11 (* .cse6 6)) (.cse9 (* .cse13 12)) (.cse8 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ 212 .cse0 .cse1 (* 72 .cse2) (* 246 |ULTIMATE.start_main_~n~0#1|) .cse3 .cse4) (+ .cse5 (* 106 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~z~0#1| 34) (* .cse6 12) (* 72 |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ .cse7 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse8)) (= (+ (* .cse6 18) .cse5 (* 64 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~x~0#1| 54) (* |ULTIMATE.start_main_~z~0#1| 10)) (+ .cse0 .cse1 .cse3 (* |ULTIMATE.start_main_~n~0#1| 18) 26)) (= (+ .cse0 .cse1 .cse3 (* |ULTIMATE.start_main_~n~0#1| 582) .cse9 482 .cse10) (+ (* |ULTIMATE.start_main_~x~0#1| 90) .cse5 (* |ULTIMATE.start_main_~z~0#1| 70) (* 160 |ULTIMATE.start_main_~y~0#1|) .cse11)) (= (+ (* 8 .cse12) 968 .cse0 (* .cse7 8) .cse4 .cse10 (* 1014 |ULTIMATE.start_main_~n~0#1|)) (+ (* .cse6 24) .cse5 (* 176 |ULTIMATE.start_main_~z~0#1|) (* 250 |ULTIMATE.start_main_~y~0#1|) (* 108 |ULTIMATE.start_main_~x~0#1|))) (= (* |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|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 .cse2) (* |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|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) .cse11 .cse9) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse8 (* 30 |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|))) [2022-11-20 11:49:53,299 INFO L895 garLoopResultBuilder]: At program point L52(line 52) 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|)))) [2022-11-20 11:49:53,300 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse6 (* 6 |ULTIMATE.start_main_~n~0#1|)) (.cse7 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse8 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 100)) (.cse2 (= |ULTIMATE.start_main_~y~0#1| (+ .cse7 .cse8 1))) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse6))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse5 (= (+ .cse7 .cse8 (* |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 .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~x~0#1| 8) .cse4 .cse5) (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 (= 6 .cse6) .cse5) (and .cse0 .cse1 .cse2 (= (* |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|)))) .cse3 .cse4 .cse5) (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|))))) [2022-11-20 11:49:53,300 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|)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (+ (* .cse2 18) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) 18) (* 64 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~x~0#1| 54) (* |ULTIMATE.start_main_~z~0#1| 10)) (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (* .cse0 4) (* |ULTIMATE.start_main_~n~0#1| 18) 26)) (= (* |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|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* .cse2 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |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|))) [2022-11-20 11:49:53,300 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-11-20 11:49:53,300 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-11-20 11:49:53,301 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 11:49:53,301 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |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|))))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 11:49:53,302 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|))) (let ((.cse4 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) 18)) (.cse0 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (* 2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|))) (.cse2 (* .cse5 4))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ 212 .cse0 .cse1 (* 72 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 246 |ULTIMATE.start_main_~n~0#1|) .cse2 (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 6)) (+ .cse3 (* 106 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~z~0#1| 34) (* .cse4 12) (* 72 |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ .cse5 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) (* |ULTIMATE.start_main_~x~0#1| 18))) (= (+ (* .cse4 18) .cse3 (* 64 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~x~0#1| 54) (* |ULTIMATE.start_main_~z~0#1| 10)) (+ .cse0 .cse1 .cse2 (* |ULTIMATE.start_main_~n~0#1| 18) 26)) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) [2022-11-20 11:49:53,302 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:49:53,302 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:49:53,302 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:49:53,302 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-11-20 11:49:53,303 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-11-20 11:49:53,303 INFO L895 garLoopResultBuilder]: At program point L51(line 51) 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|)))) [2022-11-20 11:49:53,303 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (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_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= (* |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|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~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|)))) (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|))) [2022-11-20 11:49:53,303 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-20 11:49:53,304 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (+ (* 8 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) 968 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* .cse0 8) (* .cse2 6) (* 180 .cse3) (* 1014 |ULTIMATE.start_main_~n~0#1|)) (+ (* .cse4 24) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~x~0#1|) 18) (* 176 |ULTIMATE.start_main_~z~0#1|) (* 250 |ULTIMATE.start_main_~y~0#1|) (* 108 |ULTIMATE.start_main_~x~0#1|))) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 .cse3) (* |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|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* .cse4 6) (* .cse2 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 11:49:53,304 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 100) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse0)) (= |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)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse0 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 11:49:53,304 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-20 11:49:53,305 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-20 11:49:53,305 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-20 11:49:53,306 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-20 11:49:53,306 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-20 11:49:53,306 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-20 11:49:53,310 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 11:49:53,313 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:49:53,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:49:53 BoogieIcfgContainer [2022-11-20 11:49:53,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:49:53,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:49:53,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:49:53,340 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:49:53,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:51" (3/4) ... [2022-11-20 11:49:53,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:49:53,353 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:49:53,359 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 11:49:53,360 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:49:53,360 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:49:53,360 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:49:53,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:49:53,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:49:53,428 INFO L158 Benchmark]: Toolchain (without parser) took 542859.58ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 111.9MB in the beginning and 179.9MB in the end (delta: -68.0MB). Peak memory consumption was 120.3MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,429 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:49:53,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.84ms. Allocated memory is still 146.8MB. Free memory was 111.9MB in the beginning and 101.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.95ms. Allocated memory is still 146.8MB. Free memory was 101.0MB in the beginning and 99.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,435 INFO L158 Benchmark]: Boogie Preprocessor took 24.57ms. Allocated memory is still 146.8MB. Free memory was 99.6MB in the beginning and 98.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,435 INFO L158 Benchmark]: RCFGBuilder took 341.68ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 113.7MB in the end (delta: -15.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,436 INFO L158 Benchmark]: TraceAbstraction took 542120.00ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 113.1MB in the beginning and 59.2MB in the end (delta: 53.9MB). Peak memory consumption was 124.9MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,437 INFO L158 Benchmark]: Witness Printer took 88.00ms. Allocated memory is still 211.8MB. Free memory was 59.2MB in the beginning and 179.9MB in the end (delta: -120.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:49:53,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.84ms. Allocated memory is still 146.8MB. Free memory was 111.9MB in the beginning and 101.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.95ms. Allocated memory is still 146.8MB. Free memory was 101.0MB in the beginning and 99.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.57ms. Allocated memory is still 146.8MB. Free memory was 99.6MB in the beginning and 98.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 341.68ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 113.7MB in the end (delta: -15.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 542120.00ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 113.1MB in the beginning and 59.2MB in the end (delta: 53.9MB). Peak memory consumption was 124.9MB. Max. memory is 16.1GB. * Witness Printer took 88.00ms. Allocated memory is still 211.8MB. Free memory was 59.2MB in the beginning and 179.9MB in the end (delta: -120.7MB). 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 542.0s, OverallIterations: 15, TraceHistogramMax: 29, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 309.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 193.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 mSolverCounterUnknown, 406 SdHoareTripleChecker+Valid, 110.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 309 mSDsluCounter, 1234 SdHoareTripleChecker+Invalid, 109.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 816 mSDsCounter, 777 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4716 IncrementalHoareTripleChecker+Invalid, 5533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 777 mSolverCounterUnsat, 418 mSDtfsCounter, 4716 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1895 GetRequests, 1663 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 213.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=14, InterpolantAutomatonStates: 150, 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, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 91 PreInvPairs, 167 NumberOfFragments, 1266 HoareAnnotationTreeSize, 91 FomulaSimplifications, 3938 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 14 FomulaSimplificationsInter, 23142 FormulaSimplificationTreeSizeReductionInter, 193.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 32.0s InterpolantComputationTime, 1029 NumberOfCodeBlocks, 917 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1713 ConstructedInterpolants, 0 QuantifiedInterpolants, 9848 SizeOfPredicates, 57 NumberOfNonLiveVariables, 2180 ConjunctsInSsa, 417 ConjunctsInUnsatCore, 25 InterpolantComputations, 2 PerfectInterpolantSequences, 10304/10942 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: 33]: Loop Invariant Derived loop invariant: (((((cond == 1 && a <= 100) && y * z + 2 * z == 6 + y * 12 + x * 18) && (n <= a || x * z == x * 12 + 6 * (a * x))) && z == 6 + 6 * n) && 0 <= a) && 66 + n * 48 + n * y * 6 + n * z * 12 == 6 * z + x * 18 + 30 * y - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:49:53,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_933af5bd-afff-40ac-8786-c60d4b1a2528/bin/uautomizer-ug76WZFUDN/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