./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:32:05,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:32:05,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:32:05,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:32:05,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:32:05,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:32:05,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:32:05,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:32:05,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:32:05,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:32:05,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:32:05,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:32:05,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:32:05,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:32:05,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:32:05,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:32:05,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:32:05,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:32:05,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:32:05,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:32:05,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:32:05,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:32:05,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:32:05,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:32:05,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:32:05,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:32:05,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:32:05,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:32:05,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:32:05,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:32:05,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:32:05,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:32:05,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:32:05,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:32:05,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:32:05,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:32:05,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:32:05,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:32:05,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:32:05,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:32:05,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:32:05,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:32:05,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:32:05,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:32:05,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:32:05,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:32:05,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:32:05,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:32:05,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:32:05,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:32:05,740 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:32:05,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:32:05,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:32:05,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:32:05,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:32:05,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:32:05,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:32:05,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:32:05,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:32:05,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:32:05,742 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:32:05,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:32:05,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:32:05,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:32:05,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:32:05,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:32:05,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:32:05,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:32:05,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:05,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:32:05,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:32:05,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:32:05,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:32:05,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:32:05,745 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:32:05,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:32:05,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:32:05,745 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_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-11-16 12:32:06,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:32:06,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:32:06,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:32:06,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:32:06,052 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:32:06,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-16 12:32:06,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/data/3003e5404/42c084f9f3c24148b88ecaba0dc43ed9/FLAG0104a385f [2022-11-16 12:32:06,596 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:32:06,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-16 12:32:06,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/data/3003e5404/42c084f9f3c24148b88ecaba0dc43ed9/FLAG0104a385f [2022-11-16 12:32:06,961 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/data/3003e5404/42c084f9f3c24148b88ecaba0dc43ed9 [2022-11-16 12:32:06,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:32:06,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:32:06,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:06,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:32:06,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:32:06,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:06" (1/1) ... [2022-11-16 12:32:06,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7568e211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:06, skipping insertion in model container [2022-11-16 12:32:06,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:32:06" (1/1) ... [2022-11-16 12:32:06,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:32:06,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:32:07,198 WARN L229 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_770f4715-1529-49ac-a414-99c38fa43411/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-16 12:32:07,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:07,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:32:07,243 WARN L229 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_770f4715-1529-49ac-a414-99c38fa43411/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-16 12:32:07,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:32:07,262 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:32:07,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07 WrapperNode [2022-11-16 12:32:07,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:32:07,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:07,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:32:07,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:32:07,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,340 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 353 [2022-11-16 12:32:07,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:32:07,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:32:07,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:32:07,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:32:07,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:32:07,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:32:07,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:32:07,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:32:07,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (1/1) ... [2022-11-16 12:32:07,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:32:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:07,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:32:07,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:32:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:32:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:32:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:32:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:32:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:32:07,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:32:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:32:07,463 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:32:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:32:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:32:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 12:32:07,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 12:32:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:32:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:32:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:32:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:32:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:32:07,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:32:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:32:07,468 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:32:07,584 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:32:07,586 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:32:08,242 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:32:08,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:32:08,853 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:32:08,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:08 BoogieIcfgContainer [2022-11-16 12:32:08,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:32:08,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:32:08,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:32:08,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:32:08,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:32:06" (1/3) ... [2022-11-16 12:32:08,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc86e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:08, skipping insertion in model container [2022-11-16 12:32:08,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:32:07" (2/3) ... [2022-11-16 12:32:08,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc86e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:32:08, skipping insertion in model container [2022-11-16 12:32:08,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:32:08" (3/3) ... [2022-11-16 12:32:08,867 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-11-16 12:32:08,879 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:32:08,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:32:08,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-16 12:32:08,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:32:09,148 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:32:09,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 264 transitions, 560 flow [2022-11-16 12:32:09,400 INFO L130 PetriNetUnfolder]: 18/260 cut-off events. [2022-11-16 12:32:09,400 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:32:09,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 260 events. 18/260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 278 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2022-11-16 12:32:09,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 264 transitions, 560 flow [2022-11-16 12:32:09,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 237 transitions, 495 flow [2022-11-16 12:32:09,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:32:09,448 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2159fa7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:32:09,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-16 12:32:09,465 INFO L130 PetriNetUnfolder]: 3/86 cut-off events. [2022-11-16 12:32:09,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:32:09,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:09,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:09,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:32:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1984646743, now seen corresponding path program 1 times [2022-11-16 12:32:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:09,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229193971] [2022-11-16 12:32:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229193971] [2022-11-16 12:32:09,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229193971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:09,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:09,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:32:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076552078] [2022-11-16 12:32:10,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:32:10,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:32:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:32:10,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 264 [2022-11-16 12:32:10,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 237 transitions, 495 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:10,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:10,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 264 [2022-11-16 12:32:10,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:32:23,172 INFO L130 PetriNetUnfolder]: 26913/38741 cut-off events. [2022-11-16 12:32:23,173 INFO L131 PetriNetUnfolder]: For 6158/6162 co-relation queries the response was YES. [2022-11-16 12:32:23,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75426 conditions, 38741 events. 26913/38741 cut-off events. For 6158/6162 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 266451 event pairs, 15506 based on Foata normal form. 6014/20421 useless extension candidates. Maximal degree in co-relation 36997. Up to 16667 conditions per place. [2022-11-16 12:32:23,664 INFO L137 encePairwiseOnDemand]: 232/264 looper letters, 94 selfloop transitions, 9 changer transitions 5/266 dead transitions. [2022-11-16 12:32:23,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 266 transitions, 780 flow [2022-11-16 12:32:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:32:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:32:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1076 transitions. [2022-11-16 12:32:23,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-11-16 12:32:23,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1076 transitions. [2022-11-16 12:32:23,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1076 transitions. [2022-11-16 12:32:23,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:32:23,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1076 transitions. [2022-11-16 12:32:23,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:23,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:23,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:23,722 INFO L175 Difference]: Start difference. First operand has 233 places, 237 transitions, 495 flow. Second operand 5 states and 1076 transitions. [2022-11-16 12:32:23,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 266 transitions, 780 flow [2022-11-16 12:32:23,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 266 transitions, 754 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:32:23,755 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 501 flow [2022-11-16 12:32:23,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=501, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-11-16 12:32:23,763 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, -8 predicate places. [2022-11-16 12:32:23,763 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 501 flow [2022-11-16 12:32:23,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:23,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:32:23,766 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:23,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:32:23,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:32:23,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -170886766, now seen corresponding path program 1 times [2022-11-16 12:32:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:23,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508860746] [2022-11-16 12:32:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:23,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:24,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:24,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508860746] [2022-11-16 12:32:24,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508860746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:24,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302984525] [2022-11-16 12:32:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:32:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:32:24,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:32:24,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f4715-1529-49ac-a414-99c38fa43411/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:32:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:24,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:32:24,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:24,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:24,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302984525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:32:24,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:32:24,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:32:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228231840] [2022-11-16 12:32:24,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:32:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:32:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:32:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:32:24,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 264 [2022-11-16 12:32:24,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 501 flow. Second operand has 12 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:24,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:32:24,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 264 [2022-11-16 12:32:24,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand