./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/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_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 12:15:32,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:15:32,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:15:32,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:15:32,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:15:32,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:15:32,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:15:32,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:15:32,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:15:32,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:15:32,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:15:32,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:15:32,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:15:32,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:15:32,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:15:32,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:15:32,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:15:32,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:15:32,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:15:32,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:15:32,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:15:32,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:15:32,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:15:32,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:15:32,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:15:32,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:15:32,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:15:32,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:15:32,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:15:32,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:15:32,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:15:32,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:15:32,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:15:32,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:15:32,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:15:32,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:15:32,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:15:32,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:15:32,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:15:32,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:15:32,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:15:32,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:15:32,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:15:32,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:15:32,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:15:32,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:15:32,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:15:32,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:15:32,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:15:32,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:15:32,572 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:15:32,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:15:32,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:15:32,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:15:32,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:15:32,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:15:32,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:15:32,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:15:32,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:15:32,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:15:32,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:15:32,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:15:32,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:15:32,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:15:32,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:15:32,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:15:32,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:15:32,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:15:32,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:32,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:15:32,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:15:32,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:15:32,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:15:32,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:15:32,577 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:15:32,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:15:32,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:15:32,578 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_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 [2022-11-16 12:15:32,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:15:32,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:15:32,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:15:32,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:15:32,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:15:32,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-11-16 12:15:33,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/data/d08d28f15/a23fd5522e1d4679ada1c94e35a2a256/FLAGc2fb1c53a [2022-11-16 12:15:33,469 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:15:33,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-11-16 12:15:33,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/data/d08d28f15/a23fd5522e1d4679ada1c94e35a2a256/FLAGc2fb1c53a [2022-11-16 12:15:33,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/data/d08d28f15/a23fd5522e1d4679ada1c94e35a2a256 [2022-11-16 12:15:33,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:15:33,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:15:33,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:33,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:15:33,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:15:33,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:33" (1/1) ... [2022-11-16 12:15:33,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bcf0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:33, skipping insertion in model container [2022-11-16 12:15:33,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:33" (1/1) ... [2022-11-16 12:15:33,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:15:33,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:15:34,112 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-11-16 12:15:34,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:34,129 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:15:34,163 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-11-16 12:15:34,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:34,183 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:15:34,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34 WrapperNode [2022-11-16 12:15:34,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:34,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:34,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:15:34,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:15:34,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,251 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 365 [2022-11-16 12:15:34,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:34,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:15:34,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:15:34,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:15:34,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:15:34,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:15:34,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:15:34,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:15:34,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (1/1) ... [2022-11-16 12:15:34,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:34,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:15:34,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:15:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:15:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:15:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:15:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:15:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:15:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:15:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:15:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:15:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:15:34,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:15:34,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 12:15:34,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 12:15:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:15:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:15:34,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:15:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:15:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:15:34,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:15:34,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:15:34,414 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:15:34,584 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:15:34,586 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:15:35,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:15:35,780 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:15:35,780 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:15:35,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:35 BoogieIcfgContainer [2022-11-16 12:15:35,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:15:35,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:15:35,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:15:35,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:15:35,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:15:33" (1/3) ... [2022-11-16 12:15:35,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7dc59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:35, skipping insertion in model container [2022-11-16 12:15:35,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:34" (2/3) ... [2022-11-16 12:15:35,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7dc59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:35, skipping insertion in model container [2022-11-16 12:15:35,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:35" (3/3) ... [2022-11-16 12:15:35,824 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2022-11-16 12:15:35,837 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:15:35,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:15:35,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-16 12:15:35,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:15:36,111 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:15:36,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 280 transitions, 592 flow [2022-11-16 12:15:36,370 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-11-16 12:15:36,371 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:15:36,379 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. [2022-11-16 12:15:36,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 280 transitions, 592 flow [2022-11-16 12:15:36,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 253 transitions, 527 flow [2022-11-16 12:15:36,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:15:36,419 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;@8cb3d56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:15:36,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-16 12:15:36,443 INFO L130 PetriNetUnfolder]: 3/94 cut-off events. [2022-11-16 12:15:36,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:15:36,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:36,445 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] [2022-11-16 12:15:36,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:15:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:36,453 INFO L85 PathProgramCache]: Analyzing trace with hash -818528076, now seen corresponding path program 1 times [2022-11-16 12:15:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:36,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369192219] [2022-11-16 12:15:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:36,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:36,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369192219] [2022-11-16 12:15:36,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369192219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:36,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:36,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:15:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125341004] [2022-11-16 12:15:36,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:36,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:15:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:15:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:15:37,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-11-16 12:15:37,011 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) [2022-11-16 12:15:37,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:37,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-11-16 12:15:37,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:50,043 INFO L130 PetriNetUnfolder]: 26913/38763 cut-off events. [2022-11-16 12:15:50,043 INFO L131 PetriNetUnfolder]: For 6162/6166 co-relation queries the response was YES. [2022-11-16 12:15:50,171 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. [2022-11-16 12:15:50,518 INFO L137 encePairwiseOnDemand]: 247/280 looper letters, 94 selfloop transitions, 9 changer transitions 6/281 dead transitions. [2022-11-16 12:15:50,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 281 transitions, 810 flow [2022-11-16 12:15:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:15:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:15:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1153 transitions. [2022-11-16 12:15:50,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8235714285714286 [2022-11-16 12:15:50,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1153 transitions. [2022-11-16 12:15:50,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1153 transitions. [2022-11-16 12:15:50,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:50,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1153 transitions. [2022-11-16 12:15:50,560 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) [2022-11-16 12:15:50,570 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) [2022-11-16 12:15:50,572 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) [2022-11-16 12:15:50,574 INFO L175 Difference]: Start difference. First operand has 248 places, 253 transitions, 527 flow. Second operand 5 states and 1153 transitions. [2022-11-16 12:15:50,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 281 transitions, 810 flow [2022-11-16 12:15:50,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 281 transitions, 784 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:15:50,593 INFO L231 Difference]: Finished difference. Result has 240 places, 234 transitions, 529 flow [2022-11-16 12:15:50,596 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} [2022-11-16 12:15:50,602 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2022-11-16 12:15:50,603 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 234 transitions, 529 flow [2022-11-16 12:15:50,604 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) [2022-11-16 12:15:50,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:50,605 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] [2022-11-16 12:15:50,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:15:50,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 12:15:50,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:50,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1974738438, now seen corresponding path program 1 times [2022-11-16 12:15:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538742494] [2022-11-16 12:15:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:50,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538742494] [2022-11-16 12:15:50,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538742494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:50,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175900291] [2022-11-16 12:15:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:50,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:50,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:50,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f7ae16-bc75-4dc5-87ab-8457cd1a99b8/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:15:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:51,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:15:51,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:51,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:51,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175900291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:51,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:15:51,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:15:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216010936] [2022-11-16 12:15:51,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:51,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:15:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:15:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:15:51,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-11-16 12:15:51,344 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) [2022-11-16 12:15:51,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:51,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-11-16 12:15:51,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand