./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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 e2dd5d34f88ad6d47e063e6c09c7fec2ff27fac96724824e4298e1c863fcdc4b --- 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 09:31:54,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:31:54,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:31:54,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:31:54,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:31:54,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:31:54,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:31:54,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:31:54,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:31:54,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:31:54,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:31:54,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:31:54,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:31:54,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:31:54,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:31:54,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:31:54,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:31:54,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:31:54,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:31:54,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:31:54,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:31:54,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:31:54,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:31:54,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:31:54,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:31:54,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:31:54,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:31:54,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:31:54,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:31:54,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:31:54,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:31:54,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:31:54,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:31:54,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:31:54,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:31:54,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:31:54,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:31:54,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:31:54,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:31:54,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:31:54,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:31:54,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:31:54,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:31:54,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:31:54,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:31:54,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:31:54,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:31:54,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:31:54,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:31:54,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:31:54,852 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:31:54,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:31:54,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:31:54,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:31:54,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:31:54,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:31:54,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:31:54,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:31:54,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:31:54,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:31:54,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:31:54,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:31:54,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:31:54,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:31:54,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:31:54,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:31:54,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:54,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:31:54,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:31:54,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:31:54,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:31:54,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:31:54,859 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:31:54,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:31:54,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:31:54,860 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2dd5d34f88ad6d47e063e6c09c7fec2ff27fac96724824e4298e1c863fcdc4b [2022-11-20 09:31:55,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:31:55,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:31:55,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:31:55,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:31:55,169 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:31:55,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/gcd_2+newton_3_6.i [2022-11-20 09:31:58,243 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:31:58,442 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:31:58,443 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i [2022-11-20 09:31:58,450 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data/bdd729f43/8300f8ab0334440d8cd156db9d26f48a/FLAG023556a70 [2022-11-20 09:31:58,471 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data/bdd729f43/8300f8ab0334440d8cd156db9d26f48a [2022-11-20 09:31:58,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:31:58,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:31:58,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:58,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:31:58,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:31:58,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b56333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58, skipping insertion in model container [2022-11-20 09:31:58,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:31:58,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:31:58,668 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[1226,1239] [2022-11-20 09:31:58,693 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[2862,2875] [2022-11-20 09:31:58,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:58,705 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:31:58,719 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[1226,1239] [2022-11-20 09:31:58,730 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[2862,2875] [2022-11-20 09:31:58,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:31:58,746 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:31:58,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58 WrapperNode [2022-11-20 09:31:58,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:31:58,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:58,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:31:58,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:31:58,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,805 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-20 09:31:58,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:31:58,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:31:58,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:31:58,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:31:58,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:31:58,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:31:58,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:31:58,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:31:58,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (1/1) ... [2022-11-20 09:31:58,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:31:58,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:58,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:31:58,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:31:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:31:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 09:31:58,938 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 09:31:58,938 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 09:31:58,940 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 09:31:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:31:58,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:31:58,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:31:59,022 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:31:59,024 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:31:59,229 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:31:59,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:31:59,236 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:31:59,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:59 BoogieIcfgContainer [2022-11-20 09:31:59,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:31:59,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:31:59,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:31:59,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:31:59,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:58" (1/3) ... [2022-11-20 09:31:59,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d3672d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:59, skipping insertion in model container [2022-11-20 09:31:59,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:58" (2/3) ... [2022-11-20 09:31:59,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d3672d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:59, skipping insertion in model container [2022-11-20 09:31:59,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:59" (3/3) ... [2022-11-20 09:31:59,249 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_6.i [2022-11-20 09:31:59,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:31:59,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:31:59,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:31:59,375 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;@b09b5af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:31:59,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 09:31:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:31:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:31:59,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:59,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:59,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:59,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-20 09:31:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:59,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455147674] [2022-11-20 09:31:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:59,725 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 09:31:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:59,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455147674] [2022-11-20 09:31:59,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455147674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:31:59,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:31:59,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:31:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944909993] [2022-11-20 09:31:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:31:59,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:31:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:59,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:31:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:31:59,777 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:31:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:31:59,897 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2022-11-20 09:31:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:31:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 09:31:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:31:59,907 INFO L225 Difference]: With dead ends: 96 [2022-11-20 09:31:59,908 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 09:31:59,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:31:59,915 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:31:59,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:31:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 09:31:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-20 09:31:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:31:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-20 09:31:59,956 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-20 09:31:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:31:59,957 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-20 09:31:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:31:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-20 09:31:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:31:59,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:31:59,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:59,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:31:59,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:31:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-20 09:31:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:59,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535298080] [2022-11-20 09:31:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:59,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:00,057 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 09:32:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:00,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535298080] [2022-11-20 09:32:00,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535298080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:00,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:00,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:32:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272645776] [2022-11-20 09:32:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:00,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:00,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:00,062 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:32:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:00,091 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-20 09:32:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 09:32:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:00,093 INFO L225 Difference]: With dead ends: 39 [2022-11-20 09:32:00,093 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 09:32:00,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:00,095 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:00,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:32:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 09:32:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 09:32:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:32:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-20 09:32:00,104 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-20 09:32:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:00,105 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-20 09:32:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:32:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-20 09:32:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:32:00,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:00,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:00,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:32:00,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-20 09:32:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:00,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308778982] [2022-11-20 09:32:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:00,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:00,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:00,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364269798] [2022-11-20 09:32:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:00,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:00,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:00,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:00,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:32:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:00,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:32:00,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:00,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:00,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308778982] [2022-11-20 09:32:00,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364269798] [2022-11-20 09:32:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364269798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:00,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:00,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-20 09:32:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608254901] [2022-11-20 09:32:00,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:00,489 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 09:32:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:00,594 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-20 09:32:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:32:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 09:32:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:00,595 INFO L225 Difference]: With dead ends: 40 [2022-11-20 09:32:00,596 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 09:32:00,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:32:00,598 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:00,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 214 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 09:32:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 09:32:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:32:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-20 09:32:00,605 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-20 09:32:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:00,606 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-20 09:32:00,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 09:32:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-20 09:32:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 09:32:00,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:00,607 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:00,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:32:00,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:00,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:00,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-11-20 09:32:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:00,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77394534] [2022-11-20 09:32:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:00,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:00,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402846716] [2022-11-20 09:32:00,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:00,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:00,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:00,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:00,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:32:00,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:32:00,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:00,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 09:32:00,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:08,223 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 72 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:32:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:11,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:48,462 WARN L233 SmtUtils]: Spent 2.42m on a formula simplification. DAG size of input: 129 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:34:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:49,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:49,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77394534] [2022-11-20 09:34:49,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:49,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402846716] [2022-11-20 09:34:49,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402846716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:49,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:49,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:34:49,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504255362] [2022-11-20 09:34:49,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:49,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:34:49,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:34:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=195, Unknown=1, NotChecked=0, Total=240 [2022-11-20 09:34:49,356 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 09:34:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:53,499 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-20 09:34:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:34:53,500 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 09:34:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:53,501 INFO L225 Difference]: With dead ends: 41 [2022-11-20 09:34:53,501 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 09:34:53,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 162.0s TimeCoverageRelationStatistics Valid=51, Invalid=220, Unknown=1, NotChecked=0, Total=272 [2022-11-20 09:34:53,503 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:53,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 302 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-20 09:34:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 09:34:53,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-20 09:34:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:34:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-20 09:34:53,513 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 13 [2022-11-20 09:34:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:53,513 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-20 09:34:53,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 09:34:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-20 09:34:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:34:53,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:53,515 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:53,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:53,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 09:34:53,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1682229690, now seen corresponding path program 3 times [2022-11-20 09:34:53,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:53,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406678831] [2022-11-20 09:34:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:53,734 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:53,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495308585] [2022-11-20 09:34:53,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:34:53,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:53,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:53,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:53,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:34:53,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:34:53,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:53,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 09:34:53,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:10,160 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 55 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:35:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:42,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406678831] [2022-11-20 09:35:42,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495308585] [2022-11-20 09:35:42,624 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 09:35:42,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-20 09:35:42,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:42,825 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 51 more [2022-11-20 09:35:42,828 INFO L158 Benchmark]: Toolchain (without parser) took 224352.21ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 109.5MB in the beginning and 102.8MB in the end (delta: 6.7MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2022-11-20 09:35:42,829 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:35:42,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.74ms. Allocated memory is still 165.7MB. Free memory was 109.5MB in the beginning and 98.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 09:35:42,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.66ms. Allocated memory is still 165.7MB. Free memory was 98.0MB in the beginning and 96.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:35:42,832 INFO L158 Benchmark]: Boogie Preprocessor took 43.70ms. Allocated memory is still 165.7MB. Free memory was 96.2MB in the beginning and 94.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:35:42,833 INFO L158 Benchmark]: RCFGBuilder took 382.84ms. Allocated memory is still 165.7MB. Free memory was 94.5MB in the beginning and 81.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:35:42,833 INFO L158 Benchmark]: TraceAbstraction took 223586.02ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 81.2MB in the beginning and 102.8MB in the end (delta: -21.6MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-20 09:35:42,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.74ms. Allocated memory is still 165.7MB. Free memory was 109.5MB in the beginning and 98.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.66ms. Allocated memory is still 165.7MB. Free memory was 98.0MB in the beginning and 96.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.70ms. Allocated memory is still 165.7MB. Free memory was 96.2MB in the beginning and 94.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.84ms. Allocated memory is still 165.7MB. Free memory was 94.5MB in the beginning and 81.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 223586.02ms. Allocated memory was 165.7MB in the beginning and 201.3MB in the end (delta: 35.7MB). Free memory was 81.2MB in the beginning and 102.8MB in the end (delta: -21.6MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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 e2dd5d34f88ad6d47e063e6c09c7fec2ff27fac96724824e4298e1c863fcdc4b --- 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 09:35:45,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:35:45,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:35:45,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:35:45,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:35:45,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:35:45,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:35:45,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:35:45,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:35:45,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:35:45,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:35:45,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:35:45,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:35:45,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:35:45,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:35:45,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:35:45,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:35:45,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:35:45,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:35:45,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:35:45,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:35:45,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:35:45,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:35:45,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:35:45,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:35:45,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:35:45,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:35:45,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:35:45,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:35:45,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:35:45,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:35:45,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:35:45,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:35:45,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:35:45,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:35:45,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:35:45,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:35:45,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:35:45,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:35:45,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:35:45,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:35:45,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 09:35:45,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:35:45,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:35:45,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:35:45,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:35:45,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:35:45,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:35:45,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:35:45,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:35:45,153 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:35:45,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:35:45,154 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:35:45,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:35:45,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:35:45,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:35:45,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:35:45,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:35:45,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:35:45,156 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 09:35:45,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 09:35:45,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:35:45,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:35:45,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:35:45,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:35:45,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:35:45,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:35:45,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:35:45,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:35:45,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:35:45,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:35:45,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:35:45,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 09:35:45,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 09:35:45,161 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:35:45,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:35:45,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:35:45,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 09:35:45,162 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2dd5d34f88ad6d47e063e6c09c7fec2ff27fac96724824e4298e1c863fcdc4b [2022-11-20 09:35:45,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:35:45,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:35:45,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:35:45,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:35:45,556 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:35:45,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/gcd_2+newton_3_6.i [2022-11-20 09:35:48,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:35:48,813 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:35:48,813 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i [2022-11-20 09:35:48,820 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data/a053085ca/7250a145a6e646358eea2dc76aa0be1b/FLAGec2a714a4 [2022-11-20 09:35:48,841 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/data/a053085ca/7250a145a6e646358eea2dc76aa0be1b [2022-11-20 09:35:48,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:35:48,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:35:48,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:35:48,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:35:48,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:35:48,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:48" (1/1) ... [2022-11-20 09:35:48,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd7633f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:48, skipping insertion in model container [2022-11-20 09:35:48,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:35:48" (1/1) ... [2022-11-20 09:35:48,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:35:48,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:35:49,027 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[1226,1239] [2022-11-20 09:35:49,051 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[2862,2875] [2022-11-20 09:35:49,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:35:49,065 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:35:49,079 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[1226,1239] [2022-11-20 09:35:49,089 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_f86f0b48-35ae-4e6a-89bb-9067f39e7988/sv-benchmarks/c/combinations/gcd_2+newton_3_6.i[2862,2875] [2022-11-20 09:35:49,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:35:49,104 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:35:49,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49 WrapperNode [2022-11-20 09:35:49,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:35:49,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:35:49,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:35:49,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:35:49,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,144 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-20 09:35:49,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:35:49,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:35:49,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:35:49,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:35:49,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:35:49,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:35:49,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:35:49,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:35:49,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (1/1) ... [2022-11-20 09:35:49,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:35:49,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:49,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:35:49,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:35:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:35:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 09:35:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 09:35:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 09:35:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 09:35:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 09:35:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:35:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:35:49,355 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:35:49,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:35:59,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:35:59,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:35:59,850 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:35:59,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:59 BoogieIcfgContainer [2022-11-20 09:35:59,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:35:59,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:35:59,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:35:59,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:35:59,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:35:48" (1/3) ... [2022-11-20 09:35:59,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8bb343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:59, skipping insertion in model container [2022-11-20 09:35:59,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:35:49" (2/3) ... [2022-11-20 09:35:59,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8bb343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:35:59, skipping insertion in model container [2022-11-20 09:35:59,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:35:59" (3/3) ... [2022-11-20 09:35:59,863 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_6.i [2022-11-20 09:35:59,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:35:59,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:35:59,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:35:59,945 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;@7518c9d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:35:59,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 09:35:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:35:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:35:59,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:59,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:59,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-20 09:35:59,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:35:59,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032462807] [2022-11-20 09:35:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:59,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:35:59,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:35:59,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:35:59,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 09:36:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:00,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 09:36:00,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:00,297 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 09:36:00,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:00,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032462807] [2022-11-20 09:36:00,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032462807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:00,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:00,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:36:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215844582] [2022-11-20 09:36:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:00,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:36:00,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:00,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:36:00,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:36:00,359 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 09:36:00,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:00,401 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-20 09:36:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:36:00,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 09:36:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:00,413 INFO L225 Difference]: With dead ends: 74 [2022-11-20 09:36:00,414 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 09:36:00,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:36:00,424 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:00,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-20 09:36:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 09:36:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 09:36:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:36:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-20 09:36:00,488 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-20 09:36:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:00,489 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-20 09:36:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 09:36:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-20 09:36:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:36:00,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:00,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:00,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:00,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-20 09:36:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:00,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931534025] [2022-11-20 09:36:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:00,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:00,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:00,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:36:00,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 09:36:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:00,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:36:00,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:00,981 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 09:36:00,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:00,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931534025] [2022-11-20 09:36:00,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931534025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:00,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:00,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:36:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253203768] [2022-11-20 09:36:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:36:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:36:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:36:00,986 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:36:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:01,209 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-20 09:36:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:36:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 09:36:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:01,211 INFO L225 Difference]: With dead ends: 40 [2022-11-20 09:36:01,212 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 09:36:01,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:36:01,214 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:01,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:36:01,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 09:36:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-20 09:36:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:36:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-20 09:36:01,222 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-20 09:36:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:01,223 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-20 09:36:01,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 09:36:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-20 09:36:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:36:01,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:01,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:01,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-20 09:36:01,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:01,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:01,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:01,437 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-20 09:36:01,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:01,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818076072] [2022-11-20 09:36:01,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:01,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:01,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:01,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:36:01,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 09:36:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:01,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:36:01,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:36:01,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:36:01,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:01,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818076072] [2022-11-20 09:36:01,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818076072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:36:01,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:36:01,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:36:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344907411] [2022-11-20 09:36:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:36:01,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:36:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:36:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:36:01,671 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 09:36:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:01,806 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-20 09:36:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:36:01,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 09:36:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:01,812 INFO L225 Difference]: With dead ends: 41 [2022-11-20 09:36:01,812 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 09:36:01,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:36:01,813 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:01,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:36:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 09:36:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 09:36:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:36:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-20 09:36:01,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2022-11-20 09:36:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:01,831 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-20 09:36:01,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 09:36:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-20 09:36:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:36:01,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:01,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:01,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:02,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:02,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:02,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-20 09:36:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:02,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62423715] [2022-11-20 09:36:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:02,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:02,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:02,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:36:02,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 09:36:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:02,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:36:02,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:02,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:03,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:36:03,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62423715] [2022-11-20 09:36:03,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62423715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:03,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:03,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 09:36:03,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587812153] [2022-11-20 09:36:03,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:03,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:36:03,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:36:03,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:36:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:36:03,517 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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 09:36:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:05,736 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-20 09:36:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:36:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 09:36:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:05,738 INFO L225 Difference]: With dead ends: 50 [2022-11-20 09:36:05,738 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 09:36:05,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:36:05,740 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 265 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 09:36:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 09:36:05,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 09:36:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:36:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-20 09:36:05,747 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2022-11-20 09:36:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:05,748 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-20 09:36:05,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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 09:36:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-20 09:36:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 09:36:05,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:05,749 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:05,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:05,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times [2022-11-20 09:36:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:36:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702767786] [2022-11-20 09:36:05,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:36:05,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:36:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:36:05,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:36:05,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 09:36:11,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:36:11,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:36:11,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 09:36:11,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:55,607 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 21 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 09:36:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:58,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:39:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:39:35,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:39:35,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702767786] [2022-11-20 09:39:35,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702767786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:39:35,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:39:35,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 09:39:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350556175] [2022-11-20 09:39:35,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:39:35,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 09:39:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:39:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 09:39:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=431, Unknown=35, NotChecked=0, Total=552 [2022-11-20 09:39:35,753 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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 09:40:24,942 WARN L233 SmtUtils]: Spent 18.30s on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:19,566 WARN L233 SmtUtils]: Spent 36.55s on a formula simplification. DAG size of input: 48 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:43,750 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 36 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:42:07,271 WARN L233 SmtUtils]: Spent 11.27s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:42:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:07,285 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-20 09:42:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 09:42:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 09:42:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:07,287 INFO L225 Difference]: With dead ends: 53 [2022-11-20 09:42:07,287 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 09:42:07,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 320.3s TimeCoverageRelationStatistics Valid=114, Invalid=645, Unknown=53, NotChecked=0, Total=812 [2022-11-20 09:42:07,289 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:07,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 405 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-20 09:42:07,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 09:42:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-11-20 09:42:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:42:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-20 09:42:07,298 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 15 [2022-11-20 09:42:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:07,299 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-20 09:42:07,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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 09:42:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-20 09:42:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 09:42:07,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:07,300 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:07,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:42:07,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:07,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1825995883, now seen corresponding path program 1 times [2022-11-20 09:42:07,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 09:42:07,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456693476] [2022-11-20 09:42:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:07,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 09:42:07,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 09:42:07,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 09:42:07,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86f0b48-35ae-4e6a-89bb-9067f39e7988/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 09:42:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:11,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 09:42:11,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:42:41,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:44:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:44:25,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 09:44:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456693476] [2022-11-20 09:44:25,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456693476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:44:25,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:44:25,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-20 09:44:25,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908253310] [2022-11-20 09:44:25,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:44:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 09:44:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 09:44:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 09:44:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=373, Unknown=24, NotChecked=0, Total=462 [2022-11-20 09:44:25,974 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 22 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 09:44:41,976 WARN L233 SmtUtils]: Spent 11.74s on a formula simplification. DAG size of input: 29 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:45:12,070 WARN L233 SmtUtils]: Spent 22.07s on a formula simplification. DAG size of input: 28 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:45:31,757 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 34 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:46:32,580 WARN L233 SmtUtils]: Spent 37.43s on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:46:59,178 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 29 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)