./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --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_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/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_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/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_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/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 c17307c3ae663be4a153b702602dea6d5ee45f14a080e7a1fb720e97140b770f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 04:33:53,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 04:33:53,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 04:33:53,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 04:33:53,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 04:33:53,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 04:33:53,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 04:33:53,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 04:33:53,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 04:33:53,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 04:33:53,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 04:33:53,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 04:33:53,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 04:33:53,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 04:33:53,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 04:33:53,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 04:33:53,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 04:33:54,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 04:33:54,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 04:33:54,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 04:33:54,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 04:33:54,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 04:33:54,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 04:33:54,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 04:33:54,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 04:33:54,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 04:33:54,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 04:33:54,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 04:33:54,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 04:33:54,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 04:33:54,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 04:33:54,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 04:33:54,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 04:33:54,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 04:33:54,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 04:33:54,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 04:33:54,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 04:33:54,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 04:33:54,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 04:33:54,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 04:33:54,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 04:33:54,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/config/svcomp-Reach-32bit-GemCutter_Default.epf [2021-11-25 04:33:54,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 04:33:54,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 04:33:54,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 04:33:54,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 04:33:54,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 04:33:54,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 04:33:54,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 04:33:54,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 04:33:54,124 INFO L138 SettingsManager]: * Use SBE=true [2021-11-25 04:33:54,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 04:33:54,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 04:33:54,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 04:33:54,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 04:33:54,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 04:33:54,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 04:33:54,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 04:33:54,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 04:33:54,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 04:33:54,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 04:33:54,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 04:33:54,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 04:33:54,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 04:33:54,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 04:33:54,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-11-25 04:33:54,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 04:33:54,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 04:33:54,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 04:33:54,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 04:33:54,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 04:33:54,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-25 04:33:54,133 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2021-11-25 04:33:54,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 04:33:54,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-25 04:33:54,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-11-25 04:33:54,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 04:33:54,135 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-11-25 04:33:54,135 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-11-25 04:33:54,135 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_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c17307c3ae663be4a153b702602dea6d5ee45f14a080e7a1fb720e97140b770f [2021-11-25 04:33:54,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 04:33:54,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 04:33:54,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 04:33:54,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 04:33:54,431 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 04:33:54,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2021-11-25 04:33:54,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/data/15808a1af/d751214288f24fb98a691976922c6562/FLAGce50a79bd [2021-11-25 04:33:55,038 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 04:33:55,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2021-11-25 04:33:55,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/data/15808a1af/d751214288f24fb98a691976922c6562/FLAGce50a79bd [2021-11-25 04:33:55,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/data/15808a1af/d751214288f24fb98a691976922c6562 [2021-11-25 04:33:55,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 04:33:55,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 04:33:55,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 04:33:55,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 04:33:55,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 04:33:55,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64968419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55, skipping insertion in model container [2021-11-25 04:33:55,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 04:33:55,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 04:33:55,720 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_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2021-11-25 04:33:55,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 04:33:55,732 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 04:33:55,767 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_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2021-11-25 04:33:55,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 04:33:55,791 INFO L208 MainTranslator]: Completed translation [2021-11-25 04:33:55,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55 WrapperNode [2021-11-25 04:33:55,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 04:33:55,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 04:33:55,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 04:33:55,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 04:33:55,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,836 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2021-11-25 04:33:55,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 04:33:55,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 04:33:55,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 04:33:55,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 04:33:55,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 04:33:55,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 04:33:55,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 04:33:55,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 04:33:55,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (1/1) ... [2021-11-25 04:33:55,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 04:33:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:33:55,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 04:33:55,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 04:33:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 04:33:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 04:33:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 04:33:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-25 04:33:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-25 04:33:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 04:33:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 04:33:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 04:33:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 04:33:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 04:33:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 04:33:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 04:33:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 04:33:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 04:33:55,934 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 04:33:56,003 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 04:33:56,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 04:33:56,151 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 04:33:56,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 04:33:56,192 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 04:33:56,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:33:56 BoogieIcfgContainer [2021-11-25 04:33:56,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 04:33:56,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 04:33:56,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 04:33:56,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 04:33:56,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:33:55" (1/3) ... [2021-11-25 04:33:56,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d63c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:33:56, skipping insertion in model container [2021-11-25 04:33:56,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:33:55" (2/3) ... [2021-11-25 04:33:56,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d63c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:33:56, skipping insertion in model container [2021-11-25 04:33:56,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:33:56" (3/3) ... [2021-11-25 04:33:56,203 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2021-11-25 04:33:56,208 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 04:33:56,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 04:33:56,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 04:33:56,209 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 04:33:56,239 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,239 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,240 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,240 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,240 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,241 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,242 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,243 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,243 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,244 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,245 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,245 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,245 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,245 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,246 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,246 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,247 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,248 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,249 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,249 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,261 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,261 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,274 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,276 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 04:33:56,280 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-25 04:33:56,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-11-25 04:33:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:33:56,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-11-25 04:33:56,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-11-25 04:33:56,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-11-25 04:33:56,442 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 04:33:56,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 04:33:56,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:33:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:33:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash -671664948, now seen corresponding path program 1 times [2021-11-25 04:33:56,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:33:56,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814627774] [2021-11-25 04:33:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:33:56,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:33:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:33:56,857 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 04:33:56,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:33:56,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814627774] [2021-11-25 04:33:56,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814627774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:33:56,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:33:56,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 04:33:56,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533922949] [2021-11-25 04:33:56,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:33:56,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 04:33:56,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:33:56,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 04:33:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 04:33:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:56,893 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:33:56,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 04:33:56,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:56,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 04:33:56,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:33:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:33:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2108952087, now seen corresponding path program 1 times [2021-11-25 04:33:56,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:33:56,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766979859] [2021-11-25 04:33:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:33:56,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:33:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:33:57,177 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 04:33:57,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:33:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766979859] [2021-11-25 04:33:57,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766979859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:33:57,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:33:57,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 04:33:57,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534512639] [2021-11-25 04:33:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:33:57,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 04:33:57,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:33:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 04:33:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 04:33:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,182 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:33:57,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 04:33:57,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:33:57,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 04:33:57,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:33:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:33:57,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1364326631, now seen corresponding path program 1 times [2021-11-25 04:33:57,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:33:57,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401144133] [2021-11-25 04:33:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:33:57,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:33:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:33:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:33:57,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:33:57,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401144133] [2021-11-25 04:33:57,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401144133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 04:33:57,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 04:33:57,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 04:33:57,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991799037] [2021-11-25 04:33:57,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:33:57,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 04:33:57,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:33:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 04:33:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-25 04:33:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,514 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:33:57,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 04:33:57,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:33:57,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:33:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:33:57,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 04:33:57,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:33:57,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:33:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash 368478001, now seen corresponding path program 1 times [2021-11-25 04:33:57,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:33:57,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520912799] [2021-11-25 04:33:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:33:57,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:33:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:33:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 04:33:57,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:33:57,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520912799] [2021-11-25 04:33:57,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520912799] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:33:57,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079564546] [2021-11-25 04:33:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:33:57,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:33:57,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:33:57,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:33:57,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 04:33:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:33:57,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 04:33:57,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:33:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 04:33:58,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:33:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:33:58,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079564546] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 04:33:58,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 04:33:58,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6] total 8 [2021-11-25 04:33:58,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784386999] [2021-11-25 04:33:58,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 04:33:58,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 04:33:58,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:33:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 04:33:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 04:33:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:59,001 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:33:59,002 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 04:33:59,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:59,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:33:59,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:33:59,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:33:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:33:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:33:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:33:59,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 04:33:59,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:33:59,347 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:33:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:33:59,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1771229633, now seen corresponding path program 2 times [2021-11-25 04:33:59,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:33:59,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44771170] [2021-11-25 04:33:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:33:59,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:33:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:33:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:33:59,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:33:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44771170] [2021-11-25 04:33:59,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44771170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:33:59,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312702342] [2021-11-25 04:33:59,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 04:33:59,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:33:59,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:33:59,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:33:59,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 04:33:59,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 04:33:59,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 04:33:59,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 04:33:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:33:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:33:59,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 04:34:00,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312702342] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 04:34:00,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 04:34:00,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2021-11-25 04:34:00,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961654039] [2021-11-25 04:34:00,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 04:34:00,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 04:34:00,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 04:34:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-25 04:34:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:00,227 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:00,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.909090909090909) internal successors, (152), 22 states have internal predecessors, (152), 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 04:34:00,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:00,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:00,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:00,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-11-25 04:34:00,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:00,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:01,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:01,019 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:34:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1176811709, now seen corresponding path program 3 times [2021-11-25 04:34:01,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:01,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222711488] [2021-11-25 04:34:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:01,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 04:34:01,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:01,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222711488] [2021-11-25 04:34:01,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222711488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:01,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576520676] [2021-11-25 04:34:01,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 04:34:01,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:01,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:01,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:01,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 04:34:01,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 04:34:01,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 04:34:01,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 04:34:01,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:01,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 04:34:02,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576520676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 04:34:02,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 04:34:02,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 11] total 37 [2021-11-25 04:34:02,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061977756] [2021-11-25 04:34:02,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 04:34:02,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-25 04:34:02,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-25 04:34:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1126, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 04:34:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:02,401 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:02,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.945945945945946) internal successors, (183), 37 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 04:34:02,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:02,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:02,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:02,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:02,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:02,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-25 04:34:03,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:03,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 04:34:03,800 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:34:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1656440507, now seen corresponding path program 4 times [2021-11-25 04:34:03,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:03,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629658860] [2021-11-25 04:34:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:03,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 04:34:04,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629658860] [2021-11-25 04:34:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629658860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:04,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960798917] [2021-11-25 04:34:04,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 04:34:04,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:04,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:04,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 04:34:04,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 04:34:04,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 04:34:04,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 04:34:04,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 5 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:05,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 51 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:07,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960798917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 04:34:07,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 04:34:07,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 23] total 55 [2021-11-25 04:34:07,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21144100] [2021-11-25 04:34:07,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 04:34:07,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-25 04:34:07,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-25 04:34:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2462, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 04:34:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:07,566 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:07,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.4363636363636365) internal successors, (189), 55 states have internal predecessors, (189), 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 04:34:07,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:07,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:07,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:07,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:07,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:07,569 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-11-25 04:34:07,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-25 04:34:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-25 04:34:09,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:09,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:09,950 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:34:09,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash -252066539, now seen corresponding path program 5 times [2021-11-25 04:34:09,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:09,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850281210] [2021-11-25 04:34:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:09,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 13 proven. 142 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-25 04:34:10,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:10,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850281210] [2021-11-25 04:34:10,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850281210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:10,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073310447] [2021-11-25 04:34:10,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 04:34:10,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:10,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:10,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 04:34:10,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-25 04:34:10,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 04:34:10,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-25 04:34:10,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 13 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:11,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 121 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:14,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073310447] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 04:34:14,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 04:34:14,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32, 31] total 74 [2021-11-25 04:34:14,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992414222] [2021-11-25 04:34:14,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 04:34:14,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-25 04:34:14,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-25 04:34:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=963, Invalid=4439, Unknown=0, NotChecked=0, Total=5402 [2021-11-25 04:34:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:14,470 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:14,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.189189189189189) internal successors, (236), 74 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) [2021-11-25 04:34:14,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:14,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:14,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:14,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:14,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:14,471 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-25 04:34:14,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2021-11-25 04:34:14,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-25 04:34:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-25 04:34:16,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:16,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:16,765 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:34:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1673137777, now seen corresponding path program 6 times [2021-11-25 04:34:16,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:16,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79174113] [2021-11-25 04:34:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:16,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-25 04:34:17,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:17,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79174113] [2021-11-25 04:34:17,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79174113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:17,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258387328] [2021-11-25 04:34:17,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-25 04:34:17,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:17,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:17,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:17,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 04:34:17,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-11-25 04:34:17,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 04:34:17,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 04:34:17,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 8 proven. 147 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-25 04:34:17,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 59 proven. 57 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-25 04:34:18,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258387328] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 04:34:18,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 04:34:18,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 16 [2021-11-25 04:34:18,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134624297] [2021-11-25 04:34:18,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 04:34:18,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 04:34:18,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 04:34:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-25 04:34:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:18,453 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:18,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 16 states have internal predecessors, (136), 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 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-25 04:34:18,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-11-25 04:34:18,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 66 states. [2021-11-25 04:34:18,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-25 04:34:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-25 04:34:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-25 04:34:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:34:18,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:18,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:18,887 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-25 04:34:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 04:34:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1198706353, now seen corresponding path program 7 times [2021-11-25 04:34:18,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-25 04:34:18,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43914260] [2021-11-25 04:34:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 04:34:18,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 04:34:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 30 proven. 322 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-25 04:34:19,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-25 04:34:19,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43914260] [2021-11-25 04:34:19,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43914260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 04:34:19,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351359578] [2021-11-25 04:34:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 04:34:19,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 [2021-11-25 04:34:19,479 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 04:34:19,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 04:34:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 04:34:19,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-25 04:34:19,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 04:34:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 27 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:21,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 04:34:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 301 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 04:34:26,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351359578] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 04:34:26,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 04:34:26,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 50, 46] total 120 [2021-11-25 04:34:26,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510700672] [2021-11-25 04:34:26,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 04:34:26,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-25 04:34:26,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-25 04:34:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-25 04:34:26,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=12068, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 04:34:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:26,490 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-11-25 04:34:26,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.691666666666667) internal successors, (323), 120 states have internal predecessors, (323), 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 04:34:26,490 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:26,490 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:26,490 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 66 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:34:26,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 04:34:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-25 04:34:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 04:34:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-25 04:34:34,167 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-25 04:34:34,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-11-25 04:34:34,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-11-25 04:34:34,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-25 04:34:34,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 04:34:34,389 INFO L732 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2021-11-25 04:34:34,392 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-25 04:34:34,392 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 04:34:34,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:34:34 BasicIcfg [2021-11-25 04:34:34,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 04:34:34,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 04:34:34,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 04:34:34,396 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 04:34:34,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:33:56" (3/4) ... [2021-11-25 04:34:34,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 04:34:34,404 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-25 04:34:34,405 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-25 04:34:34,408 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-25 04:34:34,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-25 04:34:34,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 04:34:34,409 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 04:34:34,440 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/witness.graphml [2021-11-25 04:34:34,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 04:34:34,441 INFO L158 Benchmark]: Toolchain (without parser) took 39026.03ms. Allocated memory was 115.3MB in the beginning and 390.1MB in the end (delta: 274.7MB). Free memory was 86.0MB in the beginning and 187.0MB in the end (delta: -101.0MB). Peak memory consumption was 174.7MB. Max. memory is 16.1GB. [2021-11-25 04:34:34,441 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 04:34:34,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.83ms. Allocated memory is still 115.3MB. Free memory was 85.7MB in the beginning and 88.5MB in the end (delta: -2.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 04:34:34,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.53ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 86.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 04:34:34,443 INFO L158 Benchmark]: Boogie Preprocessor took 23.95ms. Allocated memory is still 115.3MB. Free memory was 86.9MB in the beginning and 85.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 04:34:34,443 INFO L158 Benchmark]: RCFGBuilder took 333.05ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 73.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 04:34:34,444 INFO L158 Benchmark]: TraceAbstraction took 38198.39ms. Allocated memory was 115.3MB in the beginning and 390.1MB in the end (delta: 274.7MB). Free memory was 72.9MB in the beginning and 189.1MB in the end (delta: -116.3MB). Peak memory consumption was 161.6MB. Max. memory is 16.1GB. [2021-11-25 04:34:34,444 INFO L158 Benchmark]: Witness Printer took 45.18ms. Allocated memory is still 390.1MB. Free memory was 189.1MB in the beginning and 187.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 04:34:34,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.83ms. Allocated memory is still 115.3MB. Free memory was 85.7MB in the beginning and 88.5MB in the end (delta: -2.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.53ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 86.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.95ms. Allocated memory is still 115.3MB. Free memory was 86.9MB in the beginning and 85.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.05ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 73.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 38198.39ms. Allocated memory was 115.3MB in the beginning and 390.1MB in the end (delta: 274.7MB). Free memory was 72.9MB in the beginning and 189.1MB in the end (delta: -116.3MB). Peak memory consumption was 161.6MB. Max. memory is 16.1GB. * Witness Printer took 45.18ms. Allocated memory is still 390.1MB. Free memory was 189.1MB in the beginning and 187.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6693, positive: 4243, positive conditional: 3773, positive unconditional: 470, negative: 2450, negative conditional: 2447, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4306, positive: 4243, positive conditional: 3773, positive unconditional: 470, negative: 63, negative conditional: 60, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4306, positive: 4243, positive conditional: 3773, positive unconditional: 470, negative: 63, negative conditional: 60, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4688, positive: 4243, positive conditional: 3535, positive unconditional: 708, negative: 445, negative conditional: 382, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4688, positive: 4243, positive conditional: 2712, positive unconditional: 1531, negative: 445, negative conditional: 380, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4688, positive: 4243, positive conditional: 2712, positive unconditional: 1531, negative: 445, negative conditional: 380, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 523, positive: 473, positive conditional: 26, positive unconditional: 447, negative: 50, negative conditional: 47, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 523, positive: 447, positive conditional: 0, positive unconditional: 447, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 76, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 50, negative conditional: 47, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 224, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 167, negative conditional: 121, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4688, positive: 3770, positive conditional: 2686, positive unconditional: 1084, negative: 395, negative conditional: 333, negative unconditional: 62, unknown: 523, unknown conditional: 73, unknown unconditional: 450] , Statistics on independence cache: Total cache size (in pairs): 523, Positive cache size: 473, Positive conditional cache size: 26, Positive unconditional cache size: 447, Negative cache size: 50, Negative conditional cache size: 47, Negative unconditional cache size: 3, Eliminated conditions: 825, Maximal queried relation: 9, Independence queries for same thread: 2387 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 97, Number of trivial persistent sets: 73, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 473, positive: 470, positive conditional: 0, positive unconditional: 470, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6693, positive: 4243, positive conditional: 3773, positive unconditional: 470, negative: 2450, negative conditional: 2447, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4306, positive: 4243, positive conditional: 3773, positive unconditional: 470, negative: 63, negative conditional: 60, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4306, positive: 4243, positive conditional: 3773, positive unconditional: 470, negative: 63, negative conditional: 60, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4688, positive: 4243, positive conditional: 3535, positive unconditional: 708, negative: 445, negative conditional: 382, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4688, positive: 4243, positive conditional: 2712, positive unconditional: 1531, negative: 445, negative conditional: 380, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4688, positive: 4243, positive conditional: 2712, positive unconditional: 1531, negative: 445, negative conditional: 380, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 523, positive: 473, positive conditional: 26, positive unconditional: 447, negative: 50, negative conditional: 47, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 523, positive: 447, positive conditional: 0, positive unconditional: 447, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 76, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 50, negative conditional: 47, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 224, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 167, negative conditional: 121, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4688, positive: 3770, positive conditional: 2686, positive unconditional: 1084, negative: 395, negative conditional: 333, negative unconditional: 62, unknown: 523, unknown conditional: 73, unknown unconditional: 450] , Statistics on independence cache: Total cache size (in pairs): 523, Positive cache size: 473, Positive conditional cache size: 26, Positive unconditional cache size: 447, Negative cache size: 50, Negative conditional cache size: 47, Negative unconditional cache size: 3, Eliminated conditions: 825, Maximal queried relation: 9, Independence queries for same thread: 2387 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 94 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 38.0s, OverallIterations: 10, TraceHistogramMax: 0, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 14.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 405, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 1569 NumberOfCodeBlocks, 1564 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2239 ConstructedInterpolants, 0 QuantifiedInterpolants, 18149 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1362 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 1512/3448 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-25 04:34:34,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2021-11-25 04:34:34,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17c6cc67-61d8-4bc3-b3b1-26e3229483b9/bin/ugemcutter-4L4vKOHkXZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE