./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ --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 8ecae2ca1de1e5b446d807037ed0cb2d4fc04c355acb35a6870f18f7e175f10e --- 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-dbf71c6-m [2022-10-17 10:54:35,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:54:35,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:54:35,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:54:35,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:54:35,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:54:35,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:54:35,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:54:35,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:54:35,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:54:35,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:54:35,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:54:35,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:54:35,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:54:35,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:54:35,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:54:35,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:54:35,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:54:35,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:54:35,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:54:35,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:54:35,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:54:35,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:54:35,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:54:35,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:54:35,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:54:35,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:54:35,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:54:35,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:54:35,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:54:35,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:54:35,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:54:35,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:54:35,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:54:35,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:54:35,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:54:35,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:54:35,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:54:35,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:54:35,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:54:35,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:54:35,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:54:35,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:54:35,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:54:35,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:54:35,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:54:35,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:54:35,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:54:35,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:54:35,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:54:35,913 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:54:35,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:54:35,915 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:54:35,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:54:35,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:54:35,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:54:35,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:54:35,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:54:35,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:54:35,916 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:54:35,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:54:35,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:54:35,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:54:35,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:54:35,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:54:35,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:54:35,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:54:35,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:54:35,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:54:35,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:54:35,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:54:35,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:54:35,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:54:35,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:54:35,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:54:35,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ecae2ca1de1e5b446d807037ed0cb2d4fc04c355acb35a6870f18f7e175f10e [2022-10-17 10:54:36,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:54:36,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:54:36,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:54:36,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:54:36,260 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:54:36,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2022-10-17 10:54:36,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/data/a32d7b11a/d7f7f4e78b0d4cf8821900d5e2c215ab/FLAGab767d2fb [2022-10-17 10:54:37,041 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:54:37,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2022-10-17 10:54:37,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/data/a32d7b11a/d7f7f4e78b0d4cf8821900d5e2c215ab/FLAGab767d2fb [2022-10-17 10:54:37,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/data/a32d7b11a/d7f7f4e78b0d4cf8821900d5e2c215ab [2022-10-17 10:54:37,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:54:37,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:54:37,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:54:37,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:54:37,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:54:37,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:54:37" (1/1) ... [2022-10-17 10:54:37,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e919a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:37, skipping insertion in model container [2022-10-17 10:54:37,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:54:37" (1/1) ... [2022-10-17 10:54:37,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:54:37,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:54:37,772 WARN L230 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_c7f33d70-68fc-4021-a17b-ab634821716e/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] [2022-10-17 10:54:37,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:54:37,973 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:54:38,003 WARN L230 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_c7f33d70-68fc-4021-a17b-ab634821716e/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] [2022-10-17 10:54:38,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:54:38,120 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:54:38,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38 WrapperNode [2022-10-17 10:54:38,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:54:38,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:54:38,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:54:38,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:54:38,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,257 INFO L138 Inliner]: procedures = 144, calls = 231, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 563 [2022-10-17 10:54:38,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:54:38,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:54:38,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:54:38,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:54:38,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:54:38,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:54:38,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:54:38,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:54:38,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (1/1) ... [2022-10-17 10:54:38,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:54:38,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:54:38,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:54:38,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:54:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:54:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:54:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:54:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:54:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:54:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2022-10-17 10:54:38,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2022-10-17 10:54:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-10-17 10:54:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-10-17 10:54:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-10-17 10:54:38,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-10-17 10:54:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:54:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-10-17 10:54:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-10-17 10:54:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-17 10:54:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-17 10:54:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:54:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:54:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-10-17 10:54:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-10-17 10:54:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:54:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-10-17 10:54:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-10-17 10:54:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:54:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:54:38,802 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:54:38,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:54:39,373 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: SUMMARY for call __CS_cs(); srcloc: null [2022-10-17 10:54:39,374 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-10-17 10:54:39,375 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume !(0 != ~__CS_ret~0 % 256); [2022-10-17 10:54:39,375 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0 != ~__CS_ret~0 % 256); [2022-10-17 10:54:39,375 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-10-17 10:54:39,375 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != ~__CS_ret~0 % 256); [2022-10-17 10:54:39,376 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-10-17 10:54:41,873 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:54:41,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:54:41,884 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:54:41,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:54:41 BoogieIcfgContainer [2022-10-17 10:54:41,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:54:41,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:54:41,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:54:41,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:54:41,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:54:37" (1/3) ... [2022-10-17 10:54:41,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa8dd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:54:41, skipping insertion in model container [2022-10-17 10:54:41,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:54:38" (2/3) ... [2022-10-17 10:54:41,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa8dd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:54:41, skipping insertion in model container [2022-10-17 10:54:41,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:54:41" (3/3) ... [2022-10-17 10:54:41,896 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2022-10-17 10:54:41,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:54:41,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:54:41,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:54:41,995 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;@39561a8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:54:41,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:54:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 121 states have (on average 1.5041322314049588) internal successors, (182), 122 states have internal predecessors, (182), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-10-17 10:54:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 10:54:42,016 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:54:42,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:54:42,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:54:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:54:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1724368089, now seen corresponding path program 1 times [2022-10-17 10:54:42,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:54:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508041563] [2022-10-17 10:54:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:54:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:54:43,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:54:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508041563] [2022-10-17 10:54:43,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508041563] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:54:43,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:54:43,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:54:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531207668] [2022-10-17 10:54:43,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:54:43,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:54:43,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:54:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:54:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:54:43,206 INFO L87 Difference]: Start difference. First operand has 172 states, 121 states have (on average 1.5041322314049588) internal successors, (182), 122 states have internal predecessors, (182), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-10-17 10:54:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:54:43,338 INFO L93 Difference]: Finished difference Result 347 states and 569 transitions. [2022-10-17 10:54:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:54:43,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2022-10-17 10:54:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:54:43,356 INFO L225 Difference]: With dead ends: 347 [2022-10-17 10:54:43,356 INFO L226 Difference]: Without dead ends: 173 [2022-10-17 10:54:43,366 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 [2022-10-17 10:54:43,373 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 5 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:54:43,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 492 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:54:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-10-17 10:54:43,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2022-10-17 10:54:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-10-17 10:54:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 248 transitions. [2022-10-17 10:54:43,500 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 248 transitions. Word has length 32 [2022-10-17 10:54:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:54:43,501 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 248 transitions. [2022-10-17 10:54:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-10-17 10:54:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 248 transitions. [2022-10-17 10:54:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:54:43,513 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:54:43,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:54:43,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:54:43,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:54:43,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:54:43,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1488698589, now seen corresponding path program 1 times [2022-10-17 10:54:43,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:54:43,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620385667] [2022-10-17 10:54:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:43,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:54:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:54:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:54:44,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620385667] [2022-10-17 10:54:44,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620385667] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:54:44,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:54:44,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:54:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917496417] [2022-10-17 10:54:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:54:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:54:44,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:54:44,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:54:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:54:44,181 INFO L87 Difference]: Start difference. First operand 169 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-10-17 10:54:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:54:44,257 INFO L93 Difference]: Finished difference Result 337 states and 496 transitions. [2022-10-17 10:54:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:54:44,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2022-10-17 10:54:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:54:44,268 INFO L225 Difference]: With dead ends: 337 [2022-10-17 10:54:44,268 INFO L226 Difference]: Without dead ends: 171 [2022-10-17 10:54:44,270 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 [2022-10-17 10:54:44,272 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:54:44,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 487 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:54:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-10-17 10:54:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2022-10-17 10:54:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-10-17 10:54:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 249 transitions. [2022-10-17 10:54:44,318 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 249 transitions. Word has length 36 [2022-10-17 10:54:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:54:44,319 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 249 transitions. [2022-10-17 10:54:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-10-17 10:54:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 249 transitions. [2022-10-17 10:54:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:54:44,324 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:54:44,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:54:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:54:44,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:54:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:54:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash 967627515, now seen corresponding path program 1 times [2022-10-17 10:54:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:54:44,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430603719] [2022-10-17 10:54:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:54:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:54:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:54:44,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430603719] [2022-10-17 10:54:44,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430603719] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:54:44,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630569485] [2022-10-17 10:54:44,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:44,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:54:44,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:54:44,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:54:44,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:54:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:45,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:54:45,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:54:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:54:45,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:54:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:54:46,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630569485] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:54:46,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:54:46,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-10-17 10:54:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077117559] [2022-10-17 10:54:46,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:54:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:54:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:54:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:54:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:54:46,011 INFO L87 Difference]: Start difference. First operand 170 states and 249 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2022-10-17 10:54:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:54:46,080 INFO L93 Difference]: Finished difference Result 341 states and 501 transitions. [2022-10-17 10:54:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:54:46,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 38 [2022-10-17 10:54:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:54:46,084 INFO L225 Difference]: With dead ends: 341 [2022-10-17 10:54:46,084 INFO L226 Difference]: Without dead ends: 174 [2022-10-17 10:54:46,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:54:46,092 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 3 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 971 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 [2022-10-17 10:54:46,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 971 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:54:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-10-17 10:54:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-10-17 10:54:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 124 states have internal predecessors, (169), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-10-17 10:54:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 253 transitions. [2022-10-17 10:54:46,131 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 253 transitions. Word has length 38 [2022-10-17 10:54:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:54:46,132 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 253 transitions. [2022-10-17 10:54:46,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2022-10-17 10:54:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 253 transitions. [2022-10-17 10:54:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-17 10:54:46,137 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:54:46,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:54:46,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:54:46,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:54:46,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:54:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:54:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -624054089, now seen corresponding path program 2 times [2022-10-17 10:54:46,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:54:46,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780464826] [2022-10-17 10:54:46,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:46,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:54:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:54:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:54:47,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780464826] [2022-10-17 10:54:47,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780464826] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:54:47,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873719292] [2022-10-17 10:54:47,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:54:47,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:54:47,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:54:47,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:54:47,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:54:48,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:54:48,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:54:48,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:54:48,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:54:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:54:48,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:54:48,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873719292] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:54:48,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:54:48,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-17 10:54:48,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727079939] [2022-10-17 10:54:48,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:54:48,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:54:48,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:54:48,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:54:48,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:54:48,571 INFO L87 Difference]: Start difference. First operand 174 states and 253 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-10-17 10:54:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:54:48,621 INFO L93 Difference]: Finished difference Result 332 states and 495 transitions. [2022-10-17 10:54:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:54:48,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 42 [2022-10-17 10:54:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:54:48,626 INFO L225 Difference]: With dead ends: 332 [2022-10-17 10:54:48,627 INFO L226 Difference]: Without dead ends: 306 [2022-10-17 10:54:48,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:54:48,629 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 206 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:54:48,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 934 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:54:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-10-17 10:54:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2022-10-17 10:54:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 207 states have (on average 1.4106280193236715) internal successors, (292), 207 states have internal predecessors, (292), 83 states have call successors, (83), 14 states have call predecessors, (83), 14 states have return successors, (91), 83 states have call predecessors, (91), 83 states have call successors, (91) [2022-10-17 10:54:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 466 transitions. [2022-10-17 10:54:48,663 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 466 transitions. Word has length 42 [2022-10-17 10:54:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:54:48,664 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 466 transitions. [2022-10-17 10:54:48,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-10-17 10:54:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 466 transitions. [2022-10-17 10:54:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-17 10:54:48,668 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:54:48,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:54:48,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:54:48,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:54:48,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:54:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:54:48,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1759881955, now seen corresponding path program 1 times [2022-10-17 10:54:48,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:54:48,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546908033] [2022-10-17 10:54:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:48,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:54:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:54:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:54:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:54:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:54:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 10:54:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:54:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:54:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-17 10:54:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:54:49,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546908033] [2022-10-17 10:54:49,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546908033] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:54:49,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207490528] [2022-10-17 10:54:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:54:49,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:54:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:54:49,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:54:49,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:54:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:54:50,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:54:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:54:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-17 10:54:50,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:54:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-17 10:54:50,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207490528] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:54:50,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:54:50,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 9 [2022-10-17 10:54:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612443478] [2022-10-17 10:54:50,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:54:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:54:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:54:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:54:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:54:50,768 INFO L87 Difference]: Start difference. First operand 305 states and 466 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:54:52,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:54:54,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:54:56,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:54:58,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:54:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:54:59,925 INFO L93 Difference]: Finished difference Result 617 states and 950 transitions. [2022-10-17 10:54:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:54:59,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2022-10-17 10:54:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:54:59,930 INFO L225 Difference]: With dead ends: 617 [2022-10-17 10:54:59,931 INFO L226 Difference]: Without dead ends: 325 [2022-10-17 10:54:59,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:54:59,934 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 36 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:54:59,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 966 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 563 Invalid, 4 Unknown, 0 Unchecked, 9.1s Time] [2022-10-17 10:54:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-10-17 10:55:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2022-10-17 10:55:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 219 states have (on average 1.3926940639269407) internal successors, (305), 221 states have internal predecessors, (305), 83 states have call successors, (83), 14 states have call predecessors, (83), 16 states have return successors, (97), 83 states have call predecessors, (97), 83 states have call successors, (97) [2022-10-17 10:55:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 485 transitions. [2022-10-17 10:55:00,018 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 485 transitions. Word has length 100 [2022-10-17 10:55:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:55:00,020 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 485 transitions. [2022-10-17 10:55:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 10:55:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 485 transitions. [2022-10-17 10:55:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 10:55:00,026 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:55:00,026 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:00,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:00,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f33d70-68fc-4021-a17b-ab634821716e/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:55:00,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:55:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash -420954683, now seen corresponding path program 2 times [2022-10-17 10:55:00,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:00,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504907808] [2022-10-17 10:55:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:00,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:55:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:55:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:01,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:55:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:55:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:55:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 10:55:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 10:55:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-17 10:55:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-17 10:55:02,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:55:02,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504907808] [2022-10-17 10:55:02,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504907808] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:02,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:02,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:55:02,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065085984] [2022-10-17 10:55:02,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:02,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:55:02,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:55:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:55:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:55:02,023 INFO L87 Difference]: Start difference. First operand 319 states and 485 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:55:04,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:55:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:55:05,705 INFO L93 Difference]: Finished difference Result 662 states and 1021 transitions. [2022-10-17 10:55:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:55:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-10-17 10:55:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:55:05,714 INFO L225 Difference]: With dead ends: 662 [2022-10-17 10:55:05,714 INFO L226 Difference]: Without dead ends: 636 [2022-10-17 10:55:05,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:55:05,717 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 313 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:55:05,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 929 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 677 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-10-17 10:55:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-10-17 10:55:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 595. [2022-10-17 10:55:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 394 states have (on average 1.4238578680203047) internal successors, (561), 401 states have internal predecessors, (561), 165 states have call successors, (165), 28 states have call predecessors, (165), 35 states have return successors, (209), 165 states have call predecessors, (209), 165 states have call successors, (209) [2022-10-17 10:55:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 935 transitions. [2022-10-17 10:55:05,787 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 935 transitions. Word has length 110 [2022-10-17 10:55:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:55:05,788 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 935 transitions. [2022-10-17 10:55:05,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:55:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 935 transitions. [2022-10-17 10:55:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 10:55:05,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:55:05,792 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:05,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:55:05,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:55:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash -593993191, now seen corresponding path program 1 times [2022-10-17 10:55:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:55:05,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277594009] [2022-10-17 10:55:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms