./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- 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-8393723 [2022-11-18 19:51:54,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:51:54,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:51:54,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:51:54,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:51:54,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:51:54,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:51:54,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:51:54,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:51:54,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:51:54,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:51:54,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:51:54,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:51:54,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:51:54,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:51:54,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:51:54,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:51:54,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:51:54,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:51:54,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:51:54,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:51:54,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:51:54,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:51:54,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:51:54,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:51:54,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:51:54,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:51:54,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:51:54,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:51:54,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:51:54,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:51:54,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:51:54,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:51:54,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:51:54,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:51:54,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:51:54,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:51:54,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:51:54,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:51:54,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:51:54,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:51:54,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:51:54,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:51:54,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:51:54,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:51:54,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:51:54,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:51:54,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:51:54,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:51:54,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:51:54,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:51:54,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:51:54,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:51:54,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:51:54,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:51:54,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:51:54,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:51:54,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:51:54,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:51:54,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:51:54,626 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:51:54,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:51:54,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:51:54,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:51:54,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:51:54,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:51:54,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:51:54,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:51:54,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:54,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:51:54,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:51:54,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:51:54,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:51:54,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:51:54,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:51:54,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:51:54,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:51:54,632 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_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-18 19:51:54,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:51:55,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:51:55,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:51:55,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:51:55,038 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:51:55,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-18 19:51:55,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/data/6f35a1ae1/ddee97f7e13f4d6b91a1f9885cb812a8/FLAG4744b92ad [2022-11-18 19:51:55,679 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:51:55,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-18 19:51:55,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/data/6f35a1ae1/ddee97f7e13f4d6b91a1f9885cb812a8/FLAG4744b92ad [2022-11-18 19:51:56,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/data/6f35a1ae1/ddee97f7e13f4d6b91a1f9885cb812a8 [2022-11-18 19:51:56,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:51:56,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:51:56,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:56,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:51:56,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:51:56,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd19a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56, skipping insertion in model container [2022-11-18 19:51:56,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:51:56,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:51:56,373 WARN L234 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_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-18 19:51:56,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:56,392 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:51:56,431 WARN L234 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_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-18 19:51:56,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:56,453 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:51:56,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56 WrapperNode [2022-11-18 19:51:56,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:56,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:56,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:51:56,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:51:56,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,517 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 394 [2022-11-18 19:51:56,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:56,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:51:56,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:51:56,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:51:56,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:51:56,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:51:56,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:51:56,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:51:56,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (1/1) ... [2022-11-18 19:51:56,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:56,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:51:56,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:51:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:51:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:51:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:51:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:51:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:51:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:51:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:51:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:51:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:51:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:51:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 19:51:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 19:51:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:51:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:51:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:51:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:51:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:51:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:51:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:51:56,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:51:56,945 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:51:56,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:51:57,865 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:51:58,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:51:58,693 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 19:51:58,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:58 BoogieIcfgContainer [2022-11-18 19:51:58,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:51:58,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:51:58,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:51:58,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:51:58,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:51:56" (1/3) ... [2022-11-18 19:51:58,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3327b3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:58, skipping insertion in model container [2022-11-18 19:51:58,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:56" (2/3) ... [2022-11-18 19:51:58,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3327b3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:58, skipping insertion in model container [2022-11-18 19:51:58,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:58" (3/3) ... [2022-11-18 19:51:58,711 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-11-18 19:51:58,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:51:58,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:51:58,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 19:51:58,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:51:59,038 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:51:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 302 transitions, 636 flow [2022-11-18 19:51:59,343 INFO L130 PetriNetUnfolder]: 22/298 cut-off events. [2022-11-18 19:51:59,344 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:51:59,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 298 events. 22/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-11-18 19:51:59,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 302 transitions, 636 flow [2022-11-18 19:51:59,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 275 transitions, 571 flow [2022-11-18 19:51:59,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:59,408 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;@7fc37e1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:59,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-11-18 19:51:59,437 INFO L130 PetriNetUnfolder]: 3/82 cut-off events. [2022-11-18 19:51:59,437 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:51:59,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:51:59,440 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] [2022-11-18 19:51:59,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-18 19:51:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 187426028, now seen corresponding path program 1 times [2022-11-18 19:51:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005556650] [2022-11-18 19:51:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:00,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:00,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005556650] [2022-11-18 19:52:00,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005556650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:00,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:00,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:52:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274986409] [2022-11-18 19:52:00,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:52:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:52:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:00,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-18 19:52:00,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 275 transitions, 571 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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) [2022-11-18 19:52:00,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:00,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-18 19:52:00,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:09,629 INFO L130 PetriNetUnfolder]: 13803/19665 cut-off events. [2022-11-18 19:52:09,630 INFO L131 PetriNetUnfolder]: For 3942/3948 co-relation queries the response was YES. [2022-11-18 19:52:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38277 conditions, 19665 events. 13803/19665 cut-off events. For 3942/3948 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 115227 event pairs, 6594 based on Foata normal form. 3470/10639 useless extension candidates. Maximal degree in co-relation 18677. Up to 8379 conditions per place. [2022-11-18 19:52:09,905 INFO L137 encePairwiseOnDemand]: 257/302 looper letters, 100 selfloop transitions, 14 changer transitions 7/302 dead transitions. [2022-11-18 19:52:09,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 302 transitions, 874 flow [2022-11-18 19:52:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:52:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:52:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-11-18 19:52:09,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105960264900662 [2022-11-18 19:52:09,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-11-18 19:52:09,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-11-18 19:52:09,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:09,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-11-18 19:52:09,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 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) [2022-11-18 19:52:09,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2022-11-18 19:52:09,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 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) [2022-11-18 19:52:09,980 INFO L175 Difference]: Start difference. First operand has 267 places, 275 transitions, 571 flow. Second operand 5 states and 1224 transitions. [2022-11-18 19:52:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 302 transitions, 874 flow [2022-11-18 19:52:10,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 302 transitions, 848 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:52:10,029 INFO L231 Difference]: Finished difference. Result has 256 places, 254 transitions, 598 flow [2022-11-18 19:52:10,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=256, PETRI_TRANSITIONS=254} [2022-11-18 19:52:10,040 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, -11 predicate places. [2022-11-18 19:52:10,041 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 254 transitions, 598 flow [2022-11-18 19:52:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 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) [2022-11-18 19:52:10,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:10,044 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] [2022-11-18 19:52:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:52:10,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-18 19:52:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1085214959, now seen corresponding path program 1 times [2022-11-18 19:52:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:10,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216213058] [2022-11-18 19:52:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:10,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216213058] [2022-11-18 19:52:10,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216213058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766828871] [2022-11-18 19:52:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:10,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:10,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:10,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:52:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:10,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:52:10,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:10,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:10,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766828871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:10,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:10,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:52:10,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32509457] [2022-11-18 19:52:10,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:10,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:52:10,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:52:10,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:52:10,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-18 19:52:10,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 254 transitions, 598 flow. Second operand has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 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) [2022-11-18 19:52:10,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:10,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-18 19:52:10,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:26,013 INFO L130 PetriNetUnfolder]: 34506/48988 cut-off events. [2022-11-18 19:52:26,013 INFO L131 PetriNetUnfolder]: For 3053/3068 co-relation queries the response was YES. [2022-11-18 19:52:26,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92446 conditions, 48988 events. 34506/48988 cut-off events. For 3053/3068 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 302906 event pairs, 16485 based on Foata normal form. 9/17792 useless extension candidates. Maximal degree in co-relation 73584. Up to 8370 conditions per place. [2022-11-18 19:52:26,468 INFO L137 encePairwiseOnDemand]: 279/302 looper letters, 214 selfloop transitions, 62 changer transitions 0/457 dead transitions. [2022-11-18 19:52:26,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 457 transitions, 1666 flow [2022-11-18 19:52:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:52:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:52:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4101 transitions. [2022-11-18 19:52:26,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7544150110375276 [2022-11-18 19:52:26,480 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4101 transitions. [2022-11-18 19:52:26,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4101 transitions. [2022-11-18 19:52:26,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:26,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4101 transitions. [2022-11-18 19:52:26,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 227.83333333333334) internal successors, (4101), 18 states have internal predecessors, (4101), 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) [2022-11-18 19:52:26,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 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) [2022-11-18 19:52:26,507 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 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) [2022-11-18 19:52:26,507 INFO L175 Difference]: Start difference. First operand has 256 places, 254 transitions, 598 flow. Second operand 18 states and 4101 transitions. [2022-11-18 19:52:26,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 457 transitions, 1666 flow [2022-11-18 19:52:26,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 457 transitions, 1658 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:52:26,522 INFO L231 Difference]: Finished difference. Result has 269 places, 296 transitions, 960 flow [2022-11-18 19:52:26,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=960, PETRI_PLACES=269, PETRI_TRANSITIONS=296} [2022-11-18 19:52:26,524 INFO L288 CegarLoopForPetriNet]: 267 programPoint places, 2 predicate places. [2022-11-18 19:52:26,524 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 296 transitions, 960 flow [2022-11-18 19:52:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 214.66666666666666) internal successors, (2576), 12 states have internal predecessors, (2576), 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) [2022-11-18 19:52:26,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:26,527 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-11-18 19:52:26,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:26,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-11-18 19:52:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash 718075763, now seen corresponding path program 1 times [2022-11-18 19:52:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454802214] [2022-11-18 19:52:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:26,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454802214] [2022-11-18 19:52:26,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454802214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837235423] [2022-11-18 19:52:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:26,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:26,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:26,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff5fea0b-c297-4eb8-bdd2-fa03ae85127c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:52:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:27,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:52:27,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:27,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:52:27,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837235423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:27,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:52:27,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:52:27,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349114205] [2022-11-18 19:52:27,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:27,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:52:27,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:27,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:52:27,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:52:27,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 302 [2022-11-18 19:52:27,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 296 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 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) [2022-11-18 19:52:27,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:27,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 302 [2022-11-18 19:52:27,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand