./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/config/svcomp-Overflow-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 06:47:03,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 06:47:03,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 06:47:03,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 06:47:03,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 06:47:03,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 06:47:03,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 06:47:03,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 06:47:03,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 06:47:03,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 06:47:03,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 06:47:03,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 06:47:03,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 06:47:03,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 06:47:03,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 06:47:03,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 06:47:03,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 06:47:03,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 06:47:03,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 06:47:03,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 06:47:03,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 06:47:03,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 06:47:03,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 06:47:03,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 06:47:03,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 06:47:03,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 06:47:03,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 06:47:03,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 06:47:03,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 06:47:03,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 06:47:03,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 06:47:03,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 06:47:03,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 06:47:03,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 06:47:03,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 06:47:03,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 06:47:03,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 06:47:03,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 06:47:03,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 06:47:03,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 06:47:03,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 06:47:03,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/config/svcomp-Overflow-32bit-GemCutter_Default.epf [2022-11-23 06:47:03,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 06:47:03,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 06:47:03,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 06:47:03,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 06:47:03,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 06:47:03,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 06:47:03,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 06:47:03,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 06:47:03,682 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 06:47:03,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 06:47:03,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 06:47:03,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 06:47:03,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 06:47:03,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 06:47:03,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 06:47:03,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 06:47:03,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 06:47:03,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 06:47:03,686 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 06:47:03,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 06:47:03,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 06:47:03,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 06:47:03,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 06:47:03,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 06:47:03,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 06:47:03,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 06:47:03,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 06:47:03,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 06:47:03,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 06:47:03,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 06:47:03,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 06:47:03,690 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-23 06:47:03,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 06:47:03,691 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-23 06:47:03,691 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-11-23 06:47:03,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-23 06:47:03,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 06:47:03,692 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-23 06:47:03,692 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-23 06:47:03,693 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_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-23 06:47:04,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 06:47:04,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 06:47:04,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 06:47:04,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 06:47:04,038 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 06:47:04,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-23 06:47:07,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 06:47:07,502 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 06:47:07,504 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-23 06:47:07,515 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/data/fa037774f/22e73b13041945ee948c5226a9e6c519/FLAG5e2ed1129 [2022-11-23 06:47:07,543 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/data/fa037774f/22e73b13041945ee948c5226a9e6c519 [2022-11-23 06:47:07,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 06:47:07,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 06:47:07,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 06:47:07,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 06:47:07,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 06:47:07,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:47:07" (1/1) ... [2022-11-23 06:47:07,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e62dbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:07, skipping insertion in model container [2022-11-23 06:47:07,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:47:07" (1/1) ... [2022-11-23 06:47:07,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 06:47:07,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 06:47:07,899 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-23 06:47:07,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 06:47:07,934 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 06:47:07,981 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-23 06:47:07,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 06:47:08,005 INFO L208 MainTranslator]: Completed translation [2022-11-23 06:47:08,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08 WrapperNode [2022-11-23 06:47:08,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 06:47:08,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 06:47:08,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 06:47:08,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 06:47:08,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,080 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-11-23 06:47:08,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 06:47:08,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 06:47:08,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 06:47:08,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 06:47:08,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 06:47:08,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 06:47:08,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 06:47:08,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 06:47:08,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (1/1) ... [2022-11-23 06:47:08,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 06:47:08,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 [2022-11-23 06:47:08,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 06:47:08,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 06:47:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 06:47:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 06:47:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 06:47:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 06:47:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 06:47:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 06:47:08,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 06:47:08,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 06:47:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 06:47:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 06:47:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-23 06:47:08,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-23 06:47:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 06:47:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 06:47:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 06:47:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 06:47:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 06:47:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 06:47:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 06:47:08,234 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 06:47:08,417 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 06:47:08,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 06:47:09,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 06:47:09,773 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 06:47:09,773 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 06:47:09,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:47:09 BoogieIcfgContainer [2022-11-23 06:47:09,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 06:47:09,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 06:47:09,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 06:47:09,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 06:47:09,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:47:07" (1/3) ... [2022-11-23 06:47:09,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9ace89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:47:09, skipping insertion in model container [2022-11-23 06:47:09,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:08" (2/3) ... [2022-11-23 06:47:09,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9ace89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:47:09, skipping insertion in model container [2022-11-23 06:47:09,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:47:09" (3/3) ... [2022-11-23 06:47:09,792 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-23 06:47:09,803 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 06:47:09,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 06:47:09,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-23 06:47:09,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 06:47:09,992 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 06:47:10,056 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 06:47:10,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-23 06:47:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 [2022-11-23 06:47:10,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-23 06:47:10,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-23 06:47:10,119 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-23 06:47:10,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread4Thread1of1ForFork3 ======== [2022-11-23 06:47:10,140 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18475e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 06:47:10,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 06:47:11,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1480829881, now seen corresponding path program 1 times [2022-11-23 06:47:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:11,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760819065] [2022-11-23 06:47:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 06:47:11,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:11,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760819065] [2022-11-23 06:47:11,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760819065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:11,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 06:47:11,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 06:47:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988835755] [2022-11-23 06:47:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:11,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 06:47:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 06:47:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 06:47:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:11,816 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:11,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.0) internal successors, (232), 2 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:11,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:11,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 06:47:11,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1051157487, now seen corresponding path program 1 times [2022-11-23 06:47:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:11,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286813414] [2022-11-23 06:47:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 06:47:12,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286813414] [2022-11-23 06:47:12,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286813414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:12,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 06:47:12,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 06:47:12,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563996047] [2022-11-23 06:47:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:12,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 06:47:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 06:47:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 06:47:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:12,778 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:12,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 45.4) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:12,778 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:12,779 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:16,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 06:47:16,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash -970023422, now seen corresponding path program 1 times [2022-11-23 06:47:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:16,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450637315] [2022-11-23 06:47:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 06:47:16,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:16,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450637315] [2022-11-23 06:47:16,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450637315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 06:47:16,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686431514] [2022-11-23 06:47:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:16,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 06:47:16,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 [2022-11-23 06:47:16,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 06:47:16,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 06:47:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:17,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 06:47:17,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 06:47:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 06:47:17,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 06:47:17,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686431514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:17,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 06:47:17,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-23 06:47:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597953224] [2022-11-23 06:47:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 06:47:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 06:47:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 06:47:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:17,525 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:17,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:17,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:17,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:19,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 06:47:19,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 06:47:19,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash -5953451, now seen corresponding path program 1 times [2022-11-23 06:47:19,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:19,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433026824] [2022-11-23 06:47:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:19,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 06:47:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:19,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433026824] [2022-11-23 06:47:19,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433026824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:19,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 06:47:19,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 06:47:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168598201] [2022-11-23 06:47:19,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 06:47:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 06:47:19,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 06:47:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:19,854 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:19,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 79.0) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:19,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:19,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:19,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:19,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:22,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 06:47:22,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 21650039, now seen corresponding path program 1 times [2022-11-23 06:47:22,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:22,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206660132] [2022-11-23 06:47:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 06:47:22,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:22,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206660132] [2022-11-23 06:47:22,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206660132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:22,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 06:47:22,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 06:47:22,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017228780] [2022-11-23 06:47:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:22,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 06:47:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 06:47:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 06:47:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:22,887 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:22,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:22,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:22,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:22,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:22,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 06:47:33,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:33,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2065674438, now seen corresponding path program 1 times [2022-11-23 06:47:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:33,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897741279] [2022-11-23 06:47:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 06:47:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:33,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897741279] [2022-11-23 06:47:33,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897741279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 06:47:33,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838267934] [2022-11-23 06:47:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 06:47:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 [2022-11-23 06:47:33,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 06:47:33,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 06:47:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:33,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 06:47:33,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 06:47:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 06:47:34,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 06:47:34,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838267934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:34,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 06:47:34,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-11-23 06:47:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788435803] [2022-11-23 06:47:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:34,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 06:47:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 06:47:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 06:47:34,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:34,184 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:34,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:34,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:34,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:34,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:34,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:34,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:44,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 06:47:45,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 06:47:45,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:47:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:47:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -808749428, now seen corresponding path program 1 times [2022-11-23 06:47:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:47:45,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742449946] [2022-11-23 06:47:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:47:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 06:47:45,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:47:45,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742449946] [2022-11-23 06:47:45,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742449946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 06:47:45,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782855794] [2022-11-23 06:47:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:47:45,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 06:47:45,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 [2022-11-23 06:47:45,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 06:47:45,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 06:47:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:47:45,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 06:47:45,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 06:47:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 06:47:45,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 06:47:45,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782855794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:47:45,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 06:47:45,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-11-23 06:47:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960582240] [2022-11-23 06:47:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:47:45,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 06:47:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:47:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 06:47:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 06:47:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:45,963 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:47:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:47:45,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:47:45,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:45,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:45,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:47:45,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:45,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:47:45,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:48:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:48:03,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:48:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:48:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:48:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:48:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:48:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 06:48:03,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 06:48:03,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 06:48:03,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 06:48:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 06:48:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash -148099549, now seen corresponding path program 1 times [2022-11-23 06:48:03,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 06:48:03,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175231321] [2022-11-23 06:48:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:48:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 06:48:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:48:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 06:48:04,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 06:48:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175231321] [2022-11-23 06:48:04,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175231321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 06:48:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049088956] [2022-11-23 06:48:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 06:48:04,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 06:48:04,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 [2022-11-23 06:48:04,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 06:48:04,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0cb7adf-59df-4733-a338-fb6bf6753465/bin/ugemcutter-1C6z4D84am/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 06:48:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 06:48:04,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 06:48:04,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 06:48:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 06:48:04,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 06:48:04,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049088956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 06:48:04,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 06:48:04,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-23 06:48:04,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128767155] [2022-11-23 06:48:04,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 06:48:04,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 06:48:04,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 06:48:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 06:48:04,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 06:48:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:48:04,923 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-23 06:48:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 06:48:04,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-23 06:48:04,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:48:04,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:48:04,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-11-23 06:48:04,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:48:04,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-11-23 06:48:04,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-11-23 06:48:04,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.