./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2014.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 04:34:38,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 04:34:38,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 04:34:38,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 04:34:38,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 04:34:38,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 04:34:38,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 04:34:38,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 04:34:38,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 04:34:38,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 04:34:38,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 04:34:38,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 04:34:38,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 04:34:38,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 04:34:38,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 04:34:38,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 04:34:38,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 04:34:38,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 04:34:38,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 04:34:38,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 04:34:38,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 04:34:38,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 04:34:38,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 04:34:38,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 04:34:38,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 04:34:38,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 04:34:38,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 04:34:38,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 04:34:38,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 04:34:38,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 04:34:38,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 04:34:38,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 04:34:38,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 04:34:38,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 04:34:38,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 04:34:38,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 04:34:38,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 04:34:38,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 04:34:38,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 04:34:38,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 04:34:38,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 04:34:38,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/config/svcomp-Reach-32bit-GemCutter_Default.epf [2021-11-25 04:34:38,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 04:34:38,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 04:34:38,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 04:34:38,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 04:34:38,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 04:34:38,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 04:34:38,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 04:34:38,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 04:34:38,904 INFO L138 SettingsManager]: * Use SBE=true [2021-11-25 04:34:38,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 04:34:38,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 04:34:38,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 04:34:38,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 04:34:38,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 04:34:38,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 04:34:38,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 04:34:38,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 04:34:38,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 04:34:38,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 04:34:38,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 04:34:38,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 04:34:38,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 04:34:38,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 04:34:38,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-25 04:34:38,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 04:34:38,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 04:34:38,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 04:34:38,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 04:34:38,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 04:34:38,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-25 04:34:38,911 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2021-11-25 04:34:38,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 04:34:38,911 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-25 04:34:38,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-25 04:34:38,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 04:34:38,912 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-25 04:34:38,912 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-25 04:34:38,912 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_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24d9db33c7d5aecb89ac12017849974773f5d17a3292112bf25190c4dfae9f0 [2021-11-25 04:34:39,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 04:34:39,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 04:34:39,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 04:34:39,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 04:34:39,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 04:34:39,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/../../sv-benchmarks/c/pthread-lit/fkp2014.i [2021-11-25 04:34:39,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/data/fa18f8fdf/1c60ee9461c64903aa7f1253a8abeaaa/FLAG95429cad6 [2021-11-25 04:34:39,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 04:34:39,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/sv-benchmarks/c/pthread-lit/fkp2014.i [2021-11-25 04:34:39,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/data/fa18f8fdf/1c60ee9461c64903aa7f1253a8abeaaa/FLAG95429cad6 [2021-11-25 04:34:40,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/data/fa18f8fdf/1c60ee9461c64903aa7f1253a8abeaaa [2021-11-25 04:34:40,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 04:34:40,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 04:34:40,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 04:34:40,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 04:34:40,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 04:34:40,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5820ae73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40, skipping insertion in model container [2021-11-25 04:34:40,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 04:34:40,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 04:34:40,572 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_edb8ab26-43f1-4af2-b965-d0043f5b5762/sv-benchmarks/c/pthread-lit/fkp2014.i[30003,30016] [2021-11-25 04:34:40,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 04:34:40,607 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 04:34:40,664 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_edb8ab26-43f1-4af2-b965-d0043f5b5762/sv-benchmarks/c/pthread-lit/fkp2014.i[30003,30016] [2021-11-25 04:34:40,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 04:34:40,722 INFO L208 MainTranslator]: Completed translation [2021-11-25 04:34:40,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40 WrapperNode [2021-11-25 04:34:40,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 04:34:40,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 04:34:40,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 04:34:40,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 04:34:40,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,794 INFO L137 Inliner]: procedures = 173, calls = 19, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2021-11-25 04:34:40,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 04:34:40,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 04:34:40,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 04:34:40,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 04:34:40,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 04:34:40,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 04:34:40,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 04:34:40,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 04:34:40,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (1/1) ... [2021-11-25 04:34:40,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 04:34:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:40,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:40,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2021-11-25 04:34:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 04:34:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 04:34:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 04:34:40,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 04:34:41,001 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 04:34:41,002 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 04:34:41,173 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 04:34:41,201 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 04:34:41,207 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 04:34:41,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:34:41 BoogieIcfgContainer [2021-11-25 04:34:41,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 04:34:41,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 04:34:41,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 04:34:41,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 04:34:41,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:34:40" (1/3) ... [2021-11-25 04:34:41,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af4f5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:34:41, skipping insertion in model container [2021-11-25 04:34:41,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:34:40" (2/3) ... [2021-11-25 04:34:41,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af4f5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:34:41, skipping insertion in model container [2021-11-25 04:34:41,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:34:41" (3/3) ... [2021-11-25 04:34:41,234 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2021-11-25 04:34:41,239 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 04:34:41,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 04:34:41,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 04:34:41,259 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 04:34:41,300 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,301 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,302 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,303 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,304 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,305 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,306 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,307 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,308 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,323 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,324 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:41,326 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 04:34:41,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:41,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:41,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:41,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-11-25 04:34:41,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-25 04:34:41,523 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:41,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:41,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1192029541, now seen corresponding path program 1 times [2021-11-25 04:34:41,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:41,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420939707] [2021-11-25 04:34:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:41,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:34:41,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:41,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420939707] [2021-11-25 04:34:41,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420939707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:41,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:41,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:41,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944758483] [2021-11-25 04:34:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:41,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:41,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:41,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:41,941 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:41,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-25 04:34:41,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:41,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 04:34:41,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -499023584, now seen corresponding path program 1 times [2021-11-25 04:34:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:41,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073691307] [2021-11-25 04:34:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:41,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:42,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073691307] [2021-11-25 04:34:42,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073691307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:42,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:42,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 04:34:42,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536197707] [2021-11-25 04:34:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:42,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:42,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 04:34:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,195 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:42,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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) [2021-11-25 04:34:42,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:42,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 04:34:42,334 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash 748283332, now seen corresponding path program 1 times [2021-11-25 04:34:42,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:42,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755348028] [2021-11-25 04:34:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:42,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 04:34:42,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 04:34:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 04:34:42,424 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-25 04:34:42,424 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 04:34:42,425 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2021-11-25 04:34:42,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 04:34:42,435 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 04:34:42,436 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/2) [2021-11-25 04:34:42,437 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 04:34:42,437 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-25 04:34:42,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,447 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,448 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,449 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,450 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,451 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,452 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,453 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,454 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,455 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,456 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,456 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,456 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,456 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,456 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,456 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,457 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,457 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,457 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,457 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,457 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,458 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,458 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,458 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,458 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,459 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,459 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,459 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,459 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,459 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,459 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,460 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,460 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,461 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,461 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,461 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,461 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,461 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,461 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,462 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,462 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:42,462 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 04:34:42,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:42,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:42,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:42,479 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2021-11-25 04:34:42,480 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:42,480 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:42,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2021-11-25 04:34:42,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1949579645, now seen corresponding path program 1 times [2021-11-25 04:34:42,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:42,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232910103] [2021-11-25 04:34:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:42,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:34:42,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:42,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232910103] [2021-11-25 04:34:42,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232910103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:42,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:42,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:42,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129247591] [2021-11-25 04:34:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:42,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:42,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,644 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:42,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-25 04:34:42,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:42,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 04:34:42,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash 963316404, now seen corresponding path program 1 times [2021-11-25 04:34:42,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:42,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716294523] [2021-11-25 04:34:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:42,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:42,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:42,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716294523] [2021-11-25 04:34:42,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716294523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:42,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223621859] [2021-11-25 04:34:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:42,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:42,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:42,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:42,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 04:34:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:42,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 04:34:42,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:43,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:34:43,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223621859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:43,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:34:43,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-25 04:34:43,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597806140] [2021-11-25 04:34:43,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:43,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:43,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 04:34:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:43,440 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:43,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-11-25 04:34:43,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:43,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:43,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:43,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:43,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 343331120, now seen corresponding path program 1 times [2021-11-25 04:34:43,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:43,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464582544] [2021-11-25 04:34:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:43,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:43,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:43,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464582544] [2021-11-25 04:34:43,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464582544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:43,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361746228] [2021-11-25 04:34:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:43,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:43,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:43,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 04:34:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:44,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 04:34:44,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:44,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:34:44,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361746228] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:44,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:34:44,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2021-11-25 04:34:44,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322439224] [2021-11-25 04:34:44,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:44,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:44,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-25 04:34:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:44,653 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:44,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-11-25 04:34:44,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:44,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:44,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 04:34:45,521 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 04:34:45,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:45,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:45,742 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 04:34:45,742 INFO L308 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE (1/3) [2021-11-25 04:34:45,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:45,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:45,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2021-11-25 04:34:45,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2021-11-25 04:34:45,771 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:45,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:45,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 780800320, now seen corresponding path program 1 times [2021-11-25 04:34:45,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:45,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886829620] [2021-11-25 04:34:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:45,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:45,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:45,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886829620] [2021-11-25 04:34:45,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886829620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:45,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:45,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:45,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319264297] [2021-11-25 04:34:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:45,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:45,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,854 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:45,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 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) [2021-11-25 04:34:45,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 04:34:45,865 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1750266967, now seen corresponding path program 1 times [2021-11-25 04:34:45,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:45,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698145640] [2021-11-25 04:34:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:45,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:45,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:45,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698145640] [2021-11-25 04:34:45,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698145640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:45,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:45,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 04:34:45,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665984647] [2021-11-25 04:34:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:45,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:45,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 04:34:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,968 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:45,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-25 04:34:45,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:45,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:46,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 04:34:46,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2087131378, now seen corresponding path program 1 times [2021-11-25 04:34:46,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:46,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697861555] [2021-11-25 04:34:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:46,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:46,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697861555] [2021-11-25 04:34:46,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697861555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640948733] [2021-11-25 04:34:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:46,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:46,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:46,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 04:34:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:46,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 04:34:46,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:46,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:34:46,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640948733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:46,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:34:46,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-11-25 04:34:46,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567725521] [2021-11-25 04:34:46,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:46,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 04:34:46,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:46,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 04:34:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-25 04:34:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:46,755 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:46,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2021-11-25 04:34:46,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:46,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:46,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:46,862 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 04:34:46,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:47,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 04:34:47,084 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 04:34:47,084 INFO L308 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE (2/3) [2021-11-25 04:34:47,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:47,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:47,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2021-11-25 04:34:47,091 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-25 04:34:47,092 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:47,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:47,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:47,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1010537545, now seen corresponding path program 1 times [2021-11-25 04:34:47,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55870270] [2021-11-25 04:34:47,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:47,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 04:34:47,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55870270] [2021-11-25 04:34:47,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55870270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:47,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:47,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:47,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206952958] [2021-11-25 04:34:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:47,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:47,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:47,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:47,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,180 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:47,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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) [2021-11-25 04:34:47,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 04:34:47,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash 688098496, now seen corresponding path program 1 times [2021-11-25 04:34:47,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:47,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280608966] [2021-11-25 04:34:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:47,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:47,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:47,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280608966] [2021-11-25 04:34:47,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280608966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:47,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693713311] [2021-11-25 04:34:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:47,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:47,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:47,304 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:47,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 04:34:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:47,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 04:34:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:34:47,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:34:47,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693713311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:47,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:34:47,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-25 04:34:47,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527954729] [2021-11-25 04:34:47,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:47,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:47,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 04:34:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,623 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:47,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-25 04:34:47,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:47,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:47,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 04:34:47,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -212441028, now seen corresponding path program 1 times [2021-11-25 04:34:47,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:47,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657296899] [2021-11-25 04:34:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:47,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:48,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657296899] [2021-11-25 04:34:48,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657296899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017742767] [2021-11-25 04:34:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:48,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:48,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:48,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 04:34:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:48,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 04:34:48,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:34:48,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017742767] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:48,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:34:48,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2021-11-25 04:34:48,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851558937] [2021-11-25 04:34:48,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:48,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:48,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-25 04:34:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:48,648 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:48,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2021-11-25 04:34:48,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:48,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:48,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:48,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:48,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 04:34:48,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash -223695328, now seen corresponding path program 1 times [2021-11-25 04:34:48,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760034929] [2021-11-25 04:34:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:48,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 04:34:48,979 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 04:34:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 04:34:49,006 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-25 04:34:49,006 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 04:34:49,006 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2021-11-25 04:34:49,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 04:34:49,008 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 04:34:49,009 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2021-11-25 04:34:49,009 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 04:34:49,009 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-11-25 04:34:49,018 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,018 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,019 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,019 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,019 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,019 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,019 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,019 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,020 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,020 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,020 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,020 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,020 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,021 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,021 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,021 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,021 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,021 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,021 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,022 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,022 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,022 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,022 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,022 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,023 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,023 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,023 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,023 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,023 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,023 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,024 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,024 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,024 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,024 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,024 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,024 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,025 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,025 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,025 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,025 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,025 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,025 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,026 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,026 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,026 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,026 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,026 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,026 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,027 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,028 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,028 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,028 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,028 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,028 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,028 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,029 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,029 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,029 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,029 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,029 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,030 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,030 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,030 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,030 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,030 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,030 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,031 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,031 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,031 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,031 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,031 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,031 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,032 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,033 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,033 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,033 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,033 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,033 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,033 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,034 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,034 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,034 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,034 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,034 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,035 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,035 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,035 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,035 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,035 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,035 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,036 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,036 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,036 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,036 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,037 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,037 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,037 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,037 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,037 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,037 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,038 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,038 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,038 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,038 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,039 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,039 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,039 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,039 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:49,039 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 04:34:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:49,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:49,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2021-11-25 04:34:49,045 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:49,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:49,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2021-11-25 04:34:49,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1095540216, now seen corresponding path program 1 times [2021-11-25 04:34:49,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:49,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210250747] [2021-11-25 04:34:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:49,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:49,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210250747] [2021-11-25 04:34:49,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210250747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:49,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:49,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:49,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503439962] [2021-11-25 04:34:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:49,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:49,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,122 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:49,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 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) [2021-11-25 04:34:49,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 04:34:49,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1279246079, now seen corresponding path program 1 times [2021-11-25 04:34:49,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437357018] [2021-11-25 04:34:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:49,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:49,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:49,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437357018] [2021-11-25 04:34:49,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437357018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:49,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:49,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 04:34:49,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129397309] [2021-11-25 04:34:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:49,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:49,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:49,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 04:34:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,185 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:49,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-25 04:34:49,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:49,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 04:34:49,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1368569456, now seen corresponding path program 1 times [2021-11-25 04:34:49,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:49,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985761925] [2021-11-25 04:34:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:49,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:50,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985761925] [2021-11-25 04:34:50,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985761925] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265084026] [2021-11-25 04:34:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:50,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:50,147 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:50,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 04:34:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:50,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 04:34:50,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:50,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:34:50,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265084026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:50,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:34:50,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-11-25 04:34:50,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107800806] [2021-11-25 04:34:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:50,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:34:50,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:34:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-25 04:34:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:50,564 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:50,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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) [2021-11-25 04:34:50,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:50,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:50,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:50,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 04:34:50,855 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1088989811, now seen corresponding path program 1 times [2021-11-25 04:34:50,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111198413] [2021-11-25 04:34:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:50,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:50,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:50,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111198413] [2021-11-25 04:34:50,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111198413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:50,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558344289] [2021-11-25 04:34:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:50,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:50,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:50,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 04:34:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:51,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 04:34:51,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:51,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:34:51,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558344289] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:51,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:34:51,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 21 [2021-11-25 04:34:51,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041072000] [2021-11-25 04:34:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:51,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:34:51,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:34:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-11-25 04:34:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:51,639 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:51,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-25 04:34:51,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:51,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:51,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:51,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 04:34:51,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:52,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:52,050 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash 979087596, now seen corresponding path program 1 times [2021-11-25 04:34:52,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:52,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924307405] [2021-11-25 04:34:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:52,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:52,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:52,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924307405] [2021-11-25 04:34:52,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924307405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:52,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201757294] [2021-11-25 04:34:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:52,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:52,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:52,167 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:52,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 04:34:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:52,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 04:34:52,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:52,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:34:53,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201757294] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:53,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:34:53,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 11] total 20 [2021-11-25 04:34:53,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947157014] [2021-11-25 04:34:53,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:53,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:34:53,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:53,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:34:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-11-25 04:34:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:53,090 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:53,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2021-11-25 04:34:53,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:53,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:53,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:53,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-11-25 04:34:53,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 04:34:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 04:34:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:54,887 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 04:34:54,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:55,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 04:34:55,111 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-25 04:34:55,112 INFO L308 ceAbstractionStarter]: Result for error location thrThread1of3ForFork0 was SAFE (1/4) [2021-11-25 04:34:55,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:55,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:55,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2021-11-25 04:34:55,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-25 04:34:55,117 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:55,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:55,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash -661942061, now seen corresponding path program 1 times [2021-11-25 04:34:55,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:55,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808129428] [2021-11-25 04:34:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:55,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 04:34:55,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:55,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808129428] [2021-11-25 04:34:55,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808129428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:55,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:55,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:55,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146043007] [2021-11-25 04:34:55,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:55,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:55,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,181 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:55,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2021-11-25 04:34:55,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 04:34:55,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1401106506, now seen corresponding path program 1 times [2021-11-25 04:34:55,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:55,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045123477] [2021-11-25 04:34:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:55,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:55,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:55,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045123477] [2021-11-25 04:34:55,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045123477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:55,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687247495] [2021-11-25 04:34:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:55,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:55,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:55,299 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:55,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 04:34:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:55,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 04:34:55,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 04:34:55,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:34:55,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687247495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:55,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:34:55,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-25 04:34:55,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358037777] [2021-11-25 04:34:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:55,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:55,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-25 04:34:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,627 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:55,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2021-11-25 04:34:55,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:55,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:55,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-11-25 04:34:55,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash 22920366, now seen corresponding path program 1 times [2021-11-25 04:34:55,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203490677] [2021-11-25 04:34:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:55,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:56,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:56,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203490677] [2021-11-25 04:34:56,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203490677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:56,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712626621] [2021-11-25 04:34:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:56,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:56,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:56,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 04:34:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:56,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 04:34:56,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:34:56,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 04:34:56,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712626621] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:56,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:34:56,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 9] total 17 [2021-11-25 04:34:56,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419264680] [2021-11-25 04:34:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:56,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:56,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:56,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-11-25 04:34:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:56,645 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:56,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2021-11-25 04:34:56,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:56,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:56,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:56,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:56,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-25 04:34:56,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash -848952438, now seen corresponding path program 1 times [2021-11-25 04:34:56,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:56,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480903706] [2021-11-25 04:34:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:56,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:34:57,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:57,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480903706] [2021-11-25 04:34:57,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480903706] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:57,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668063976] [2021-11-25 04:34:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:57,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:57,076 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:57,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 04:34:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:57,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 04:34:57,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:57,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 04:34:57,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668063976] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:57,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:34:57,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 11] total 18 [2021-11-25 04:34:57,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716872607] [2021-11-25 04:34:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:57,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:57,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-25 04:34:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:57,968 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:57,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2021-11-25 04:34:57,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:57,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:57,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:57,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:58,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:58,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:58,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2021-11-25 04:34:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:58,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1948324530, now seen corresponding path program 1 times [2021-11-25 04:34:58,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842822632] [2021-11-25 04:34:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:58,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 04:34:58,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 04:34:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 04:34:58,372 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-25 04:34:58,372 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 04:34:58,373 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2021-11-25 04:34:58,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 04:34:58,375 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-25 04:34:58,375 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2021-11-25 04:34:58,375 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-25 04:34:58,375 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-11-25 04:34:58,390 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,390 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,391 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,391 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,391 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,391 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,391 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,393 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,398 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,399 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,399 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,399 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,399 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,400 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,400 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,400 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,400 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,400 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,401 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,401 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,401 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,401 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,401 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,401 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,402 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,402 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,402 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,402 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,402 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,402 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,403 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,403 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,403 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,403 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,404 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,405 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,405 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,405 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,405 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,405 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,405 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,406 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,406 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,406 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,406 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,406 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,406 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,407 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,407 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,407 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,407 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,407 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,408 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,408 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,408 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,408 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,408 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,408 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,409 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,410 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,411 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,412 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,415 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,416 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,417 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,418 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,419 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,420 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,421 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,422 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,423 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,424 WARN L322 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,425 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,425 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,425 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,425 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,425 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,426 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,427 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,428 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_incs_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_inct_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,429 WARN L322 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:34:58,429 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-25 04:34:58,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:34:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:58,431 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:34:58,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2021-11-25 04:34:58,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of4ForFork0 ======== [2021-11-25 04:34:58,436 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:34:58,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:34:58,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:58,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash 259325275, now seen corresponding path program 1 times [2021-11-25 04:34:58,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:58,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401272513] [2021-11-25 04:34:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:58,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:58,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:58,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401272513] [2021-11-25 04:34:58,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401272513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:58,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:58,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:34:58,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210853427] [2021-11-25 04:34:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:58,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:34:58,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:34:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:34:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,510 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:58,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 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) [2021-11-25 04:34:58,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 04:34:58,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:34:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2006582730, now seen corresponding path program 1 times [2021-11-25 04:34:58,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:58,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178525635] [2021-11-25 04:34:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:58,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:58,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:58,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178525635] [2021-11-25 04:34:58,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178525635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:34:58,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:34:58,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 04:34:58,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846930607] [2021-11-25 04:34:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:34:58,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:34:58,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:58,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:34:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 04:34:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,574 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:58,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-11-25 04:34:58,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:58,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:10,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 04:35:10,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -324533837, now seen corresponding path program 1 times [2021-11-25 04:35:10,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:10,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562873041] [2021-11-25 04:35:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:10,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:10,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:10,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562873041] [2021-11-25 04:35:10,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562873041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:10,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490231779] [2021-11-25 04:35:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:10,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:10,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:10,720 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 04:35:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:10,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 04:35:10,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:35:11,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:35:11,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490231779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:35:11,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:35:11,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-11-25 04:35:11,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616734693] [2021-11-25 04:35:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:11,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:35:11,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:35:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-25 04:35:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:11,231 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:11,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 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) [2021-11-25 04:35:11,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:11,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:11,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:11,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:11,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-25 04:35:11,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash -717606491, now seen corresponding path program 1 times [2021-11-25 04:35:11,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:11,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380308716] [2021-11-25 04:35:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:11,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:11,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:11,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380308716] [2021-11-25 04:35:11,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380308716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:11,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399884873] [2021-11-25 04:35:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:11,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:11,651 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:11,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 04:35:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:11,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 04:35:11,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:12,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:35:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:35:12,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399884873] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:12,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:35:12,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 21 [2021-11-25 04:35:12,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247343211] [2021-11-25 04:35:12,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:12,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:35:12,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:35:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-11-25 04:35:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:12,406 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:12,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-25 04:35:12,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:12,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:12,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:12,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:35:13,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:13,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-25 04:35:13,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2136057289, now seen corresponding path program 1 times [2021-11-25 04:35:13,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:13,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058611612] [2021-11-25 04:35:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:13,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:13,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:13,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058611612] [2021-11-25 04:35:13,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058611612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:13,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101503421] [2021-11-25 04:35:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:13,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:13,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:13,351 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:13,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 04:35:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:13,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 04:35:13,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:13,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:35:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:35:14,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101503421] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:14,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:35:14,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 21 [2021-11-25 04:35:14,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215620865] [2021-11-25 04:35:14,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:14,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:35:14,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:35:14,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-25 04:35:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:14,136 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:14,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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) [2021-11-25 04:35:14,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:14,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:14,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:14,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:35:14,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:35:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:14,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:14,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-25 04:35:14,478 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1418980734, now seen corresponding path program 1 times [2021-11-25 04:35:14,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:14,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520852745] [2021-11-25 04:35:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:14,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:14,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:14,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520852745] [2021-11-25 04:35:14,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520852745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:14,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017494049] [2021-11-25 04:35:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:14,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:14,584 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:14,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-25 04:35:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:14,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 04:35:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:15,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:35:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:35:15,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017494049] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:15,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:35:15,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 11] total 20 [2021-11-25 04:35:15,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829297734] [2021-11-25 04:35:15,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:15,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:35:15,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:35:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-11-25 04:35:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:15,297 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:15,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2021-11-25 04:35:15,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:15,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:15,298 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:15,298 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:35:15,298 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:15,298 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 04:35:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:35:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 04:35:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:35:42,491 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 04:35:42,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:42,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-25 04:35:42,693 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-25 04:35:42,693 INFO L308 ceAbstractionStarter]: Result for error location thrThread1of4ForFork0 was SAFE (1/5) [2021-11-25 04:35:42,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:35:42,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:42,695 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:35:42,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2021-11-25 04:35:42,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of4ForFork0 ======== [2021-11-25 04:35:42,697 INFO L339 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=PARTIAL_ORDER_FA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 04:35:42,697 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 04:35:42,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:42,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash 116927815, now seen corresponding path program 1 times [2021-11-25 04:35:42,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:42,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616175577] [2021-11-25 04:35:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:42,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:35:42,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616175577] [2021-11-25 04:35:42,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616175577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:35:42,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:35:42,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:35:42,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630035644] [2021-11-25 04:35:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:42,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:35:42,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:35:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:35:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:42,759 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:42,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-25 04:35:42,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:42,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 04:35:42,766 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 432279608, now seen corresponding path program 1 times [2021-11-25 04:35:42,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:42,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542327920] [2021-11-25 04:35:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:42,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:42,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542327920] [2021-11-25 04:35:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542327920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127856659] [2021-11-25 04:35:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:42,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:42,847 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-25 04:35:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:42,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 04:35:42,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:43,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 04:35:43,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127856659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:35:43,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 04:35:43,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-25 04:35:43,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763290502] [2021-11-25 04:35:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:43,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:35:43,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:35:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 04:35:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:43,210 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-11-25 04:35:43,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:43,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:35:43,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:43,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:43,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2147174804, now seen corresponding path program 1 times [2021-11-25 04:35:43,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:43,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156448184] [2021-11-25 04:35:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:43,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:43,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:43,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156448184] [2021-11-25 04:35:43,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156448184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:43,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285263920] [2021-11-25 04:35:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:43,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:43,612 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:43,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-25 04:35:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:43,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 04:35:43,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:44,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:35:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:35:44,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285263920] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:44,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:35:44,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2021-11-25 04:35:44,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949530860] [2021-11-25 04:35:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:44,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:35:44,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:35:44,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-25 04:35:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:44,278 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:44,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-11-25 04:35:44,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:44,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:35:44,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:35:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:45,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:45,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-25 04:35:45,188 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1026918227, now seen corresponding path program 1 times [2021-11-25 04:35:45,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:45,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998604976] [2021-11-25 04:35:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:45,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:45,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:45,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998604976] [2021-11-25 04:35:45,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998604976] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:45,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714180765] [2021-11-25 04:35:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:45,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:45,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:45,327 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:45,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 04:35:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:45,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 04:35:45,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:45,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:35:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:35:46,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714180765] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:46,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:35:46,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 20 [2021-11-25 04:35:46,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66487459] [2021-11-25 04:35:46,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:46,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:35:46,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:35:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-11-25 04:35:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:46,578 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:46,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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) [2021-11-25 04:35:46,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:46,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:35:46,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:46,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:35:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:46,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-25 04:35:46,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:46,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 04:35:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:35:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2107555310, now seen corresponding path program 1 times [2021-11-25 04:35:46,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:35:46,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551524022] [2021-11-25 04:35:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:46,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:35:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:47,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:35:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551524022] [2021-11-25 04:35:47,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551524022] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486831195] [2021-11-25 04:35:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:35:47,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:35:47,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:35:47,008 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:35:47,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb8ab26-43f1-4af2-b965-d0043f5b5762/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-25 04:35:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:35:47,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 04:35:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:35:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:35:47,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:35:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 04:35:47,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486831195] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:35:47,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:35:47,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 11] total 19 [2021-11-25 04:35:47,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936062261] [2021-11-25 04:35:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:35:47,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 04:35:47,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:35:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 04:35:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-11-25 04:35:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:47,776 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:35:47,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2021-11-25 04:35:47,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:35:47,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:35:47,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:47,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:35:47,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.