./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/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_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/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_bcab23d3-3091-4b54-a766-11c1d5356c42/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 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --- 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 21:00:36,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:00:36,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:00:36,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:00:36,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:00:36,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:00:36,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:00:36,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:00:36,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:00:36,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:00:36,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:00:36,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:00:36,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:00:36,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:00:36,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:00:36,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:00:36,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:00:36,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:00:36,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:00:36,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:00:36,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:00:36,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:00:36,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:00:36,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:00:36,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:00:36,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:00:36,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:00:36,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:00:36,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:00:36,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:00:36,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:00:36,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:00:36,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:00:36,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:00:36,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:00:36,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:00:36,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:00:36,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:00:36,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:00:36,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:00:36,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:00:36,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:00:36,359 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:00:36,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:00:36,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:00:36,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:00:36,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:00:36,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:00:36,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:00:36,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:00:36,363 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:00:36,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:00:36,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:00:36,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:00:36,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:00:36,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:00:36,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:00:36,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:00:36,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:00:36,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:00:36,366 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:00:36,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:00:36,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:00:36,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:00:36,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:00:36,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:00:36,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:00:36,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:00:36,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:00:36,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:00:36,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:00:36,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:00:36,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:00:36,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:00:36,372 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:00:36,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:00:36,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:00:36,372 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_bcab23d3-3091-4b54-a766-11c1d5356c42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 [2022-11-18 21:00:36,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:00:36,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:00:36,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:00:36,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:00:36,735 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:00:36,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-11-18 21:00:36,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/data/efdac381e/9cb7b0a39e8340f58d442712ecb40001/FLAG16d45976d [2022-11-18 21:00:37,352 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:00:37,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-11-18 21:00:37,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/data/efdac381e/9cb7b0a39e8340f58d442712ecb40001/FLAG16d45976d [2022-11-18 21:00:37,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/data/efdac381e/9cb7b0a39e8340f58d442712ecb40001 [2022-11-18 21:00:37,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:00:37,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:00:37,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:00:37,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:00:37,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:00:37,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:37" (1/1) ... [2022-11-18 21:00:37,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3c7e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:37, skipping insertion in model container [2022-11-18 21:00:37,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:37" (1/1) ... [2022-11-18 21:00:37,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:00:37,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:00:38,008 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_bcab23d3-3091-4b54-a766-11c1d5356c42/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-11-18 21:00:38,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:00:38,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:00:38,062 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_bcab23d3-3091-4b54-a766-11c1d5356c42/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-11-18 21:00:38,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:00:38,085 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:00:38,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38 WrapperNode [2022-11-18 21:00:38,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:00:38,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:00:38,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:00:38,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:00:38,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,176 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 365 [2022-11-18 21:00:38,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:00:38,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:00:38,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:00:38,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:00:38,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,250 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:00:38,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:00:38,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:00:38,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:00:38,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (1/1) ... [2022-11-18 21:00:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:00:38,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:38,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:00:38,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:00:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:00:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:00:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:00:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:00:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:00:38,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:00:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:00:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:00:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:00:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:00:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 21:00:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 21:00:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:00:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 21:00:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 21:00:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:00:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:00:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:00:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:00:38,353 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 21:00:38,551 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:00:38,554 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:00:39,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:00:39,691 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:00:39,691 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:00:39,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:39 BoogieIcfgContainer [2022-11-18 21:00:39,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:00:39,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:00:39,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:00:39,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:00:39,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:00:37" (1/3) ... [2022-11-18 21:00:39,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a308b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:39, skipping insertion in model container [2022-11-18 21:00:39,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:38" (2/3) ... [2022-11-18 21:00:39,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a308b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:39, skipping insertion in model container [2022-11-18 21:00:39,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:39" (3/3) ... [2022-11-18 21:00:39,707 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2022-11-18 21:00:39,720 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:00:39,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:00:39,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-18 21:00:39,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:00:39,992 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 21:00:40,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 280 transitions, 592 flow [2022-11-18 21:00:40,199 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-11-18 21:00:40,200 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 21:00:40,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 276 events. 19/276 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 283 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 230. Up to 2 conditions per place. [2022-11-18 21:00:40,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 280 transitions, 592 flow [2022-11-18 21:00:40,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 253 transitions, 527 flow [2022-11-18 21:00:40,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:00:40,240 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;@78d97ee7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:00:40,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-18 21:00:40,258 INFO L130 PetriNetUnfolder]: 3/94 cut-off events. [2022-11-18 21:00:40,259 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:00:40,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:40,260 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:40,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:00:40,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash -818528076, now seen corresponding path program 1 times [2022-11-18 21:00:40,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:40,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996767030] [2022-11-18 21:00:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:40,829 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 21:00:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996767030] [2022-11-18 21:00:40,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996767030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:40,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:40,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:00:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195941862] [2022-11-18 21:00:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:40,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:00:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:00:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:00:40,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-11-18 21:00:40,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 253 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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 21:00:40,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:40,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-11-18 21:00:40,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:00:55,069 INFO L130 PetriNetUnfolder]: 26913/38763 cut-off events. [2022-11-18 21:00:55,070 INFO L131 PetriNetUnfolder]: For 6162/6166 co-relation queries the response was YES. [2022-11-18 21:00:55,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75448 conditions, 38763 events. 26913/38763 cut-off events. For 6162/6166 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 266507 event pairs, 15506 based on Foata normal form. 6016/20443 useless extension candidates. Maximal degree in co-relation 36997. Up to 16667 conditions per place. [2022-11-18 21:00:55,618 INFO L137 encePairwiseOnDemand]: 247/280 looper letters, 94 selfloop transitions, 9 changer transitions 6/281 dead transitions. [2022-11-18 21:00:55,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 281 transitions, 810 flow [2022-11-18 21:00:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:00:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:00:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1153 transitions. [2022-11-18 21:00:55,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8235714285714286 [2022-11-18 21:00:55,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1153 transitions. [2022-11-18 21:00:55,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1153 transitions. [2022-11-18 21:00:55,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:00:55,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1153 transitions. [2022-11-18 21:00:55,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 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 21:00:55,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 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 21:00:55,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 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 21:00:55,687 INFO L175 Difference]: Start difference. First operand has 248 places, 253 transitions, 527 flow. Second operand 5 states and 1153 transitions. [2022-11-18 21:00:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 281 transitions, 810 flow [2022-11-18 21:00:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 281 transitions, 784 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 21:00:55,708 INFO L231 Difference]: Finished difference. Result has 240 places, 234 transitions, 529 flow [2022-11-18 21:00:55,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=240, PETRI_TRANSITIONS=234} [2022-11-18 21:00:55,720 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2022-11-18 21:00:55,721 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 234 transitions, 529 flow [2022-11-18 21:00:55,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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 21:00:55,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:00:55,722 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:55,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:00:55,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:00:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1974738438, now seen corresponding path program 1 times [2022-11-18 21:00:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:55,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379127983] [2022-11-18 21:00:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:56,066 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 21:00:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379127983] [2022-11-18 21:00:56,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379127983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:56,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045038847] [2022-11-18 21:00:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:56,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:56,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:56,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:56,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcab23d3-3091-4b54-a766-11c1d5356c42/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:00:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:56,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:00:56,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:56,507 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 21:00:56,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:56,595 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 21:00:56,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045038847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:56,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:00:56,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:00:56,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574669208] [2022-11-18 21:00:56,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:56,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:00:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:00:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:00:56,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-11-18 21:00:56,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 234 transitions, 529 flow. Second operand has 12 states, 12 states have (on average 204.66666666666666) internal successors, (2456), 12 states have internal predecessors, (2456), 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 21:00:56,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:00:56,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-11-18 21:00:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand