./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/divmul_diverge.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/divmul_diverge.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8 --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 6ffdc119181aa2456330d740041ecbf5eb23a58830499150b547bc21d0f8f549 --- 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-2329fc7 [2022-12-13 11:07:14,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:07:14,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:07:14,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:07:14,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:07:14,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:07:14,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:07:14,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:07:14,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:07:14,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:07:14,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:07:14,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:07:14,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:07:14,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:07:14,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:07:14,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:07:14,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:07:14,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:07:14,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:07:14,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:07:14,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:07:14,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:07:14,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:07:14,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:07:14,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:07:14,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:07:14,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:07:14,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:07:14,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:07:14,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:07:14,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:07:14,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:07:14,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:07:14,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:07:14,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:07:14,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:07:14,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:07:14,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:07:14,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:07:14,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:07:14,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:07:14,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:07:14,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:07:14,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:07:14,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:07:14,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:07:14,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:07:14,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:07:14,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:07:14,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:07:14,851 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:07:14,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:07:14,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:07:14,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:07:14,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:07:14,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:07:14,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:07:14,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:07:14,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:07:14,853 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:07:14,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:07:14,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:07:14,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:07:14,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:07:14,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:07:14,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:07:14,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:07:14,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:07:14,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:07:14,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:07:14,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:07:14,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:07:14,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:07:14,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:07:14,856 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:07:14,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:07:14,856 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:07:14,856 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ffdc119181aa2456330d740041ecbf5eb23a58830499150b547bc21d0f8f549 [2022-12-13 11:07:15,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:07:15,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:07:15,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:07:15,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:07:15,091 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:07:15,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/float-benchs/divmul_diverge.c [2022-12-13 11:07:17,610 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:07:17,759 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:07:17,760 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/sv-benchmarks/c/float-benchs/divmul_diverge.c [2022-12-13 11:07:17,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/data/8a1380d34/6cb5ee9e834e4fffab08ac25749db3b4/FLAG7b4912adc [2022-12-13 11:07:18,168 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/data/8a1380d34/6cb5ee9e834e4fffab08ac25749db3b4 [2022-12-13 11:07:18,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:07:18,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:07:18,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:07:18,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:07:18,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:07:18,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c059a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18, skipping insertion in model container [2022-12-13 11:07:18,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:07:18,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:07:18,301 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_8050134a-2228-42ad-be07-ac1a111bf349/sv-benchmarks/c/float-benchs/divmul_diverge.c[613,626] [2022-12-13 11:07:18,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:07:18,320 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:07:18,329 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_8050134a-2228-42ad-be07-ac1a111bf349/sv-benchmarks/c/float-benchs/divmul_diverge.c[613,626] [2022-12-13 11:07:18,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:07:18,344 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:07:18,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18 WrapperNode [2022-12-13 11:07:18,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:07:18,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:07:18,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:07:18,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:07:18,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,367 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2022-12-13 11:07:18,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:07:18,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:07:18,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:07:18,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:07:18,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,381 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:07:18,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:07:18,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:07:18,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:07:18,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (1/1) ... [2022-12-13 11:07:18,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:07:18,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:18,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:07:18,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:07:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:07:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:07:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:07:18,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:07:18,496 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:07:18,497 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:07:18,568 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:07:18,573 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:07:18,573 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:07:18,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:07:18 BoogieIcfgContainer [2022-12-13 11:07:18,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:07:18,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:07:18,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:07:18,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:07:18,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:07:18" (1/3) ... [2022-12-13 11:07:18,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae9321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:07:18, skipping insertion in model container [2022-12-13 11:07:18,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:07:18" (2/3) ... [2022-12-13 11:07:18,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae9321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:07:18, skipping insertion in model container [2022-12-13 11:07:18,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:07:18" (3/3) ... [2022-12-13 11:07:18,584 INFO L112 eAbstractionObserver]: Analyzing ICFG divmul_diverge.c [2022-12-13 11:07:18,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:07:18,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:07:18,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:07:18,642 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;@157289fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:07:18,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:07:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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) [2022-12-13 11:07:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 11:07:18,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:18,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:07:18,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 889620925, now seen corresponding path program 1 times [2022-12-13 11:07:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:18,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906942627] [2022-12-13 11:07:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906942627] [2022-12-13 11:07:18,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906942627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:07:18,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:07:18,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:07:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050704518] [2022-12-13 11:07:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:07:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:07:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:07:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:07:18,811 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-13 11:07:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:18,832 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-12-13 11:07:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:07:18,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-12-13 11:07:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:18,840 INFO L225 Difference]: With dead ends: 39 [2022-12-13 11:07:18,841 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 11:07:18,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:07:18,845 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:18,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:07:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 11:07:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-12-13 11:07:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-12-13 11:07:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-13 11:07:18,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2022-12-13 11:07:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-13 11:07:18,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-13 11:07:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-13 11:07:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 11:07:18,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:18,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:07:18,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:18,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -875759451, now seen corresponding path program 1 times [2022-12-13 11:07:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:18,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999463557] [2022-12-13 11:07:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:18,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:18,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999463557] [2022-12-13 11:07:18,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999463557] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:07:18,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603131084] [2022-12-13 11:07:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:18,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:18,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:18,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:07:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:18,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:07:18,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:19,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:19,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603131084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:19,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:07:19,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 11:07:19,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561974116] [2022-12-13 11:07:19,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:19,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:07:19,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:07:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:07:19,055 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-12-13 11:07:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:19,080 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-12-13 11:07:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:07:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 [2022-12-13 11:07:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:19,081 INFO L225 Difference]: With dead ends: 39 [2022-12-13 11:07:19,082 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 11:07:19,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:07:19,083 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:19,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 44 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:07:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 11:07:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-13 11:07:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 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) [2022-12-13 11:07:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-12-13 11:07:19,087 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 11 [2022-12-13 11:07:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:19,088 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-12-13 11:07:19,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-12-13 11:07:19,088 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-12-13 11:07:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 11:07:19,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:19,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:19,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:07:19,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:19,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1424528451, now seen corresponding path program 2 times [2022-12-13 11:07:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359334053] [2022-12-13 11:07:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:19,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359334053] [2022-12-13 11:07:19,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359334053] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:07:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415793090] [2022-12-13 11:07:19,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:07:19,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:19,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:19,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:19,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:07:19,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:07:19,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:07:19,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:07:19,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:19,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:19,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415793090] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:19,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:07:19,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 11:07:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306515118] [2022-12-13 11:07:19,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:19,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:07:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:19,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:07:19,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:07:19,634 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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) [2022-12-13 11:07:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:19,677 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2022-12-13 11:07:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:07:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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 26 [2022-12-13 11:07:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:19,679 INFO L225 Difference]: With dead ends: 81 [2022-12-13 11:07:19,679 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 11:07:19,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:07:19,680 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:19,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 90 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:07:19,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 11:07:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-13 11:07:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 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) [2022-12-13 11:07:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-12-13 11:07:19,686 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 26 [2022-12-13 11:07:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:19,686 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-12-13 11:07:19,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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) [2022-12-13 11:07:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-12-13 11:07:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 11:07:19,687 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:19,688 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:19,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:07:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:19,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash -998809923, now seen corresponding path program 3 times [2022-12-13 11:07:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931964534] [2022-12-13 11:07:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:19,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:20,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:20,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931964534] [2022-12-13 11:07:20,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931964534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:07:20,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717324067] [2022-12-13 11:07:20,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:07:20,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:20,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:20,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:20,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:07:20,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 11:07:20,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:07:20,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:07:20,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:20,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:20,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717324067] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:20,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:07:20,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 11:07:20,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815083509] [2022-12-13 11:07:20,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:20,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:07:20,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:07:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:07:20,491 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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) [2022-12-13 11:07:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:20,582 INFO L93 Difference]: Finished difference Result 165 states and 198 transitions. [2022-12-13 11:07:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:07:20,583 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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 56 [2022-12-13 11:07:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:20,584 INFO L225 Difference]: With dead ends: 165 [2022-12-13 11:07:20,584 INFO L226 Difference]: Without dead ends: 161 [2022-12-13 11:07:20,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:07:20,585 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 197 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:20,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 154 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:07:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-13 11:07:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-12-13 11:07:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.14375) internal successors, (183), 160 states have internal predecessors, (183), 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) [2022-12-13 11:07:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2022-12-13 11:07:20,594 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 56 [2022-12-13 11:07:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:20,595 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2022-12-13 11:07:20,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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) [2022-12-13 11:07:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2022-12-13 11:07:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 11:07:20,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:20,597 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:20,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:07:20,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:20,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 870679741, now seen corresponding path program 4 times [2022-12-13 11:07:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:20,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690955386] [2022-12-13 11:07:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:20,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690955386] [2022-12-13 11:07:21,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690955386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:07:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179085135] [2022-12-13 11:07:21,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:07:21,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:21,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:21,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:07:21,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:07:21,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:07:21,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 11:07:21,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:21,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:22,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179085135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:22,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:07:22,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 11:07:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042389971] [2022-12-13 11:07:22,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:22,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 11:07:22,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 11:07:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 11:07:22,111 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 49 states have internal predecessors, (234), 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) [2022-12-13 11:07:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:22,431 INFO L93 Difference]: Finished difference Result 333 states and 402 transitions. [2022-12-13 11:07:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:07:22,431 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 49 states have internal predecessors, (234), 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 116 [2022-12-13 11:07:22,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:22,433 INFO L225 Difference]: With dead ends: 333 [2022-12-13 11:07:22,433 INFO L226 Difference]: Without dead ends: 329 [2022-12-13 11:07:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 11:07:22,435 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 542 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 298 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:07:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-12-13 11:07:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-12-13 11:07:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.1432926829268293) internal successors, (375), 328 states have internal predecessors, (375), 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) [2022-12-13 11:07:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 375 transitions. [2022-12-13 11:07:22,448 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 375 transitions. Word has length 116 [2022-12-13 11:07:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:22,448 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 375 transitions. [2022-12-13 11:07:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 49 states have internal predecessors, (234), 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) [2022-12-13 11:07:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 375 transitions. [2022-12-13 11:07:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-12-13 11:07:22,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:22,451 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:22,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:07:22,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:22,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash 582668477, now seen corresponding path program 5 times [2022-12-13 11:07:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:22,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173540975] [2022-12-13 11:07:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:24,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:24,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173540975] [2022-12-13 11:07:24,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173540975] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:07:24,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814258015] [2022-12-13 11:07:24,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:07:24,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:24,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:24,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:24,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:07:24,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-12-13 11:07:24,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:07:24,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 11:07:24,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:24,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:26,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814258015] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:26,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:07:26,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-12-13 11:07:26,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484612340] [2022-12-13 11:07:26,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:26,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-12-13 11:07:26,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-12-13 11:07:26,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 11:07:26,106 INFO L87 Difference]: Start difference. First operand 329 states and 375 transitions. Second operand has 97 states, 97 states have (on average 4.88659793814433) internal successors, (474), 97 states have internal predecessors, (474), 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) [2022-12-13 11:07:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:27,148 INFO L93 Difference]: Finished difference Result 669 states and 810 transitions. [2022-12-13 11:07:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-13 11:07:27,148 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.88659793814433) internal successors, (474), 97 states have internal predecessors, (474), 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 236 [2022-12-13 11:07:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:27,150 INFO L225 Difference]: With dead ends: 669 [2022-12-13 11:07:27,150 INFO L226 Difference]: Without dead ends: 665 [2022-12-13 11:07:27,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 11:07:27,152 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1244 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:27,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 586 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:07:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-13 11:07:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-12-13 11:07:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 1.1430722891566265) internal successors, (759), 664 states have internal predecessors, (759), 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) [2022-12-13 11:07:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 759 transitions. [2022-12-13 11:07:27,169 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 759 transitions. Word has length 236 [2022-12-13 11:07:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:27,169 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 759 transitions. [2022-12-13 11:07:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.88659793814433) internal successors, (474), 97 states have internal predecessors, (474), 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) [2022-12-13 11:07:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 759 transitions. [2022-12-13 11:07:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-12-13 11:07:27,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:27,176 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:27,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:07:27,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:27,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1974900547, now seen corresponding path program 6 times [2022-12-13 11:07:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:27,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284003598] [2022-12-13 11:07:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:07:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21949 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:07:31,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284003598] [2022-12-13 11:07:31,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284003598] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:07:31,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028420883] [2022-12-13 11:07:31,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:07:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:07:31,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:07:31,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:07:31,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-12-13 11:07:31,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:07:31,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 11:07:31,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:07:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21949 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:32,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:07:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21949 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:07:39,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028420883] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:07:39,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:07:39,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-12-13 11:07:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465532021] [2022-12-13 11:07:39,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:07:39,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-12-13 11:07:39,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:07:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-12-13 11:07:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 11:07:39,472 INFO L87 Difference]: Start difference. First operand 665 states and 759 transitions. Second operand has 193 states, 193 states have (on average 4.94300518134715) internal successors, (954), 193 states have internal predecessors, (954), 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) [2022-12-13 11:07:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:07:49,768 INFO L93 Difference]: Finished difference Result 1341 states and 1626 transitions. [2022-12-13 11:07:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-13 11:07:49,769 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.94300518134715) internal successors, (954), 193 states have internal predecessors, (954), 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 476 [2022-12-13 11:07:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:07:49,772 INFO L225 Difference]: With dead ends: 1341 [2022-12-13 11:07:49,772 INFO L226 Difference]: Without dead ends: 1337 [2022-12-13 11:07:49,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 11:07:49,774 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3191 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3191 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:07:49,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3191 Valid, 1156 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:07:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-12-13 11:07:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-12-13 11:07:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1336 states have (on average 1.1429640718562875) internal successors, (1527), 1336 states have internal predecessors, (1527), 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) [2022-12-13 11:07:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1527 transitions. [2022-12-13 11:07:49,792 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1527 transitions. Word has length 476 [2022-12-13 11:07:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:07:49,792 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1527 transitions. [2022-12-13 11:07:49,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.94300518134715) internal successors, (954), 193 states have internal predecessors, (954), 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) [2022-12-13 11:07:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1527 transitions. [2022-12-13 11:07:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-12-13 11:07:49,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:07:49,813 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1] [2022-12-13 11:07:49,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:07:50,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:07:50,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:07:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:07:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash -789145411, now seen corresponding path program 7 times [2022-12-13 11:07:50,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:07:50,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631784569] [2022-12-13 11:07:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:07:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:07:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 89965 backedges. 0 proven. 89965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:09,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:09,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631784569] [2022-12-13 11:08:09,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631784569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:09,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785007596] [2022-12-13 11:08:09,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:08:09,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:09,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:09,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:09,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:08:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:10,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-13 11:08:10,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 89965 backedges. 0 proven. 89965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:10,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 89965 backedges. 0 proven. 89965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:36,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785007596] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:36,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:36,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2022-12-13 11:08:36,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156009203] [2022-12-13 11:08:36,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:36,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2022-12-13 11:08:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2022-12-13 11:08:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-12-13 11:08:36,803 INFO L87 Difference]: Start difference. First operand 1337 states and 1527 transitions. Second operand has 385 states, 385 states have (on average 4.9714285714285715) internal successors, (1914), 385 states have internal predecessors, (1914), 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) [2022-12-13 11:10:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:10:46,809 INFO L93 Difference]: Finished difference Result 2685 states and 3258 transitions. [2022-12-13 11:10:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-13 11:10:46,811 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 4.9714285714285715) internal successors, (1914), 385 states have internal predecessors, (1914), 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 956 [2022-12-13 11:10:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:10:46,826 INFO L225 Difference]: With dead ends: 2685 [2022-12-13 11:10:46,826 INFO L226 Difference]: Without dead ends: 2681 [2022-12-13 11:10:46,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2103 GetRequests, 1720 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-12-13 11:10:46,836 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6281 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6281 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:10:46,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6281 Valid, 2328 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:10:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-12-13 11:10:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2681. [2022-12-13 11:10:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2680 states have (on average 1.142910447761194) internal successors, (3063), 2680 states have internal predecessors, (3063), 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) [2022-12-13 11:10:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3063 transitions. [2022-12-13 11:10:46,867 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3063 transitions. Word has length 956 [2022-12-13 11:10:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:10:46,867 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 3063 transitions. [2022-12-13 11:10:46,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 4.9714285714285715) internal successors, (1914), 385 states have internal predecessors, (1914), 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) [2022-12-13 11:10:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3063 transitions. [2022-12-13 11:10:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2022-12-13 11:10:46,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:10:46,886 INFO L195 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 382, 1, 1, 1, 1, 1, 1] [2022-12-13 11:10:46,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:10:47,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 11:10:47,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:10:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:10:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1131349827, now seen corresponding path program 8 times [2022-12-13 11:10:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:10:47,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420660248] [2022-12-13 11:10:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:10:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 364237 backedges. 0 proven. 364237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:53,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420660248] [2022-12-13 11:12:53,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420660248] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:12:53,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766528635] [2022-12-13 11:12:53,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:12:53,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:12:53,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:12:53,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:12:53,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8050134a-2228-42ad-be07-ac1a111bf349/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:12:53,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:12:53,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:12:53,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-13 11:12:53,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:12:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 364237 backedges. 0 proven. 364237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:54,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:14:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 364237 backedges. 0 proven. 364237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:14:41,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766528635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:14:41,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:14:41,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2022-12-13 11:14:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534640710] [2022-12-13 11:14:41,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:14:41,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2022-12-13 11:14:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:14:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2022-12-13 11:14:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2022-12-13 11:14:41,133 INFO L87 Difference]: Start difference. First operand 2681 states and 3063 transitions. Second operand has 769 states, 769 states have (on average 4.985695708712614) internal successors, (3834), 769 states have internal predecessors, (3834), 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)