./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a --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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- 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-b5237d8 [2022-11-21 16:33:24,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:33:24,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:33:24,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:33:24,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:33:24,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:33:24,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:33:24,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:33:24,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:33:24,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:33:24,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:33:24,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:33:24,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:33:24,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:33:24,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:33:24,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:33:24,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:33:24,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:33:24,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:33:24,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:33:24,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:33:24,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:33:24,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:33:24,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:33:24,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:33:24,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:33:24,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:33:24,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:33:24,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:33:24,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:33:24,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:33:24,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:33:24,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:33:24,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:33:24,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:33:24,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:33:24,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:33:24,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:33:24,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:33:24,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:33:24,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:33:24,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:33:24,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:33:24,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:33:24,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:33:24,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:33:24,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:33:24,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:33:24,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:33:24,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:33:24,652 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:33:24,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:33:24,654 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:33:24,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:33:24,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:33:24,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:33:24,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:33:24,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:33:24,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:33:24,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:33:24,655 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:33:24,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:33:24,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:33:24,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:33:24,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:33:24,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:33:24,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:33:24,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:33:24,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:33:24,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:33:24,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:33:24,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:33:24,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:33:24,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:33:24,659 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:33:24,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:33:24,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:33:24,660 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_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2022-11-21 16:33:25,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:33:25,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:33:25,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:33:25,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:33:25,073 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:33:25,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/triangular-1.i [2022-11-21 16:33:28,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:33:28,399 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:33:28,400 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/sv-benchmarks/c/pthread/triangular-1.i [2022-11-21 16:33:28,420 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/data/9cac23a04/fe245de8a32c414f9c31899a9507e0ab/FLAGde276ab6f [2022-11-21 16:33:28,440 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/data/9cac23a04/fe245de8a32c414f9c31899a9507e0ab [2022-11-21 16:33:28,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:33:28,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:33:28,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:33:28,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:33:28,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:33:28,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d51eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:28, skipping insertion in model container [2022-11-21 16:33:28,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:33:28" (1/1) ... [2022-11-21 16:33:28,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:33:28,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:33:29,013 WARN L237 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_f3fdaac2-5207-49b1-8f7d-b48182dd716a/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2022-11-21 16:33:29,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:33:29,027 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:33:29,097 WARN L237 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_f3fdaac2-5207-49b1-8f7d-b48182dd716a/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2022-11-21 16:33:29,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:33:29,143 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:33:29,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29 WrapperNode [2022-11-21 16:33:29,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:33:29,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:33:29,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:33:29,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:33:29,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,219 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-21 16:33:29,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:33:29,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:33:29,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:33:29,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:33:29,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:33:29,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:33:29,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:33:29,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:33:29,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (1/1) ... [2022-11-21 16:33:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:33:29,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:29,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:33:29,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:33:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 16:33:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 16:33:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 16:33:29,380 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 16:33:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:33:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:33:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:33:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:33:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:33:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:33:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:33:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:33:29,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:33:29,384 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:33:29,581 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:33:29,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:33:29,795 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:33:29,838 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:33:29,838 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:33:29,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:33:29 BoogieIcfgContainer [2022-11-21 16:33:29,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:33:29,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:33:29,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:33:29,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:33:29,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:33:28" (1/3) ... [2022-11-21 16:33:29,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f33e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:33:29, skipping insertion in model container [2022-11-21 16:33:29,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:33:29" (2/3) ... [2022-11-21 16:33:29,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f33e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:33:29, skipping insertion in model container [2022-11-21 16:33:29,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:33:29" (3/3) ... [2022-11-21 16:33:29,850 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2022-11-21 16:33:29,866 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:33:29,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:33:29,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 16:33:29,875 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:33:29,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:33:30,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-11-21 16:33:30,044 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-11-21 16:33:30,044 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:33:30,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-21 16:33:30,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-11-21 16:33:30,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-11-21 16:33:30,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:33:30,074 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;@6a112332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:33:30,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-21 16:33:30,086 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-11-21 16:33:30,087 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:33:30,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:30,088 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] [2022-11-21 16:33:30,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517197, now seen corresponding path program 1 times [2022-11-21 16:33:30,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:30,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463537585] [2022-11-21 16:33:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:30,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:30,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463537585] [2022-11-21 16:33:30,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463537585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:30,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:30,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:33:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228613018] [2022-11-21 16:33:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:30,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 16:33:30,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 16:33:30,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:30,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 16:33:30,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:30,690 INFO L130 PetriNetUnfolder]: 61/298 cut-off events. [2022-11-21 16:33:30,690 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 16:33:30,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 298 events. 61/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1487 event pairs, 14 based on Foata normal form. 45/261 useless extension candidates. Maximal degree in co-relation 373. Up to 49 conditions per place. [2022-11-21 16:33:30,696 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 11 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2022-11-21 16:33:30,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 194 flow [2022-11-21 16:33:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:33:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-21 16:33:30,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-11-21 16:33:30,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-21 16:33:30,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-21 16:33:30,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:30,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-21 16:33:30,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-11-21 16:33:30,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:30,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:30,728 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 164 flow. Second operand 3 states and 225 transitions. [2022-11-21 16:33:30,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 194 flow [2022-11-21 16:33:30,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:30,734 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 176 flow [2022-11-21 16:33:30,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-21 16:33:30,740 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2022-11-21 16:33:30,741 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 176 flow [2022-11-21 16:33:30,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 16:33:30,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:30,741 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] [2022-11-21 16:33:30,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:33:30,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517196, now seen corresponding path program 1 times [2022-11-21 16:33:30,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:30,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621643541] [2022-11-21 16:33:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621643541] [2022-11-21 16:33:30,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621643541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:30,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:30,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:33:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140679683] [2022-11-21 16:33:30,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:30,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:30,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 16:33:30,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 16:33:30,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:30,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 16:33:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:31,018 INFO L130 PetriNetUnfolder]: 51/313 cut-off events. [2022-11-21 16:33:31,018 INFO L131 PetriNetUnfolder]: For 64/78 co-relation queries the response was YES. [2022-11-21 16:33:31,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 313 events. 51/313 cut-off events. For 64/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1515 event pairs, 10 based on Foata normal form. 15/282 useless extension candidates. Maximal degree in co-relation 423. Up to 53 conditions per place. [2022-11-21 16:33:31,022 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 11 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2022-11-21 16:33:31,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 218 flow [2022-11-21 16:33:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:33:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-21 16:33:31,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.897119341563786 [2022-11-21 16:33:31,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-21 16:33:31,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-21 16:33:31,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:31,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-21 16:33:31,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2022-11-21 16:33:31,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:31,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:31,056 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 176 flow. Second operand 3 states and 218 transitions. [2022-11-21 16:33:31,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 218 flow [2022-11-21 16:33:31,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:31,059 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 190 flow [2022-11-21 16:33:31,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2022-11-21 16:33:31,060 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-11-21 16:33:31,061 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 190 flow [2022-11-21 16:33:31,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2022-11-21 16:33:31,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:31,061 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] [2022-11-21 16:33:31,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:33:31,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:31,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash 649821270, now seen corresponding path program 1 times [2022-11-21 16:33:31,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:31,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309213463] [2022-11-21 16:33:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:31,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309213463] [2022-11-21 16:33:31,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309213463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:31,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:31,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863574694] [2022-11-21 16:33:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:31,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:31,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:31,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 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) [2022-11-21 16:33:31,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:31,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:31,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:31,470 INFO L130 PetriNetUnfolder]: 97/367 cut-off events. [2022-11-21 16:33:31,470 INFO L131 PetriNetUnfolder]: For 155/227 co-relation queries the response was YES. [2022-11-21 16:33:31,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 367 events. 97/367 cut-off events. For 155/227 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1995 event pairs, 37 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 698. Up to 121 conditions per place. [2022-11-21 16:33:31,480 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-11-21 16:33:31,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 360 flow [2022-11-21 16:33:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2022-11-21 16:33:31,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8419753086419753 [2022-11-21 16:33:31,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 341 transitions. [2022-11-21 16:33:31,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 341 transitions. [2022-11-21 16:33:31,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:31,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 341 transitions. [2022-11-21 16:33:31,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 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) [2022-11-21 16:33:31,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:31,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:31,488 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 190 flow. Second operand 5 states and 341 transitions. [2022-11-21 16:33:31,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 360 flow [2022-11-21 16:33:31,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 100 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:33:31,494 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 218 flow [2022-11-21 16:33:31,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2022-11-21 16:33:31,496 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2022-11-21 16:33:31,497 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 218 flow [2022-11-21 16:33:31,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 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) [2022-11-21 16:33:31,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:31,497 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] [2022-11-21 16:33:31,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:33:31,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262810, now seen corresponding path program 1 times [2022-11-21 16:33:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184014935] [2022-11-21 16:33:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:31,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184014935] [2022-11-21 16:33:31,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184014935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:31,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:31,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:33:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18191053] [2022-11-21 16:33:31,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:31,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:31,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:31,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 16:33:31,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 16:33:31,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:31,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 16:33:31,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:31,790 INFO L130 PetriNetUnfolder]: 74/623 cut-off events. [2022-11-21 16:33:31,790 INFO L131 PetriNetUnfolder]: For 106/124 co-relation queries the response was YES. [2022-11-21 16:33:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 623 events. 74/623 cut-off events. For 106/124 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4245 event pairs, 34 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 886. Up to 84 conditions per place. [2022-11-21 16:33:31,801 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-11-21 16:33:31,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 298 flow [2022-11-21 16:33:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:33:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-11-21 16:33:31,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9053497942386831 [2022-11-21 16:33:31,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-11-21 16:33:31,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-11-21 16:33:31,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:31,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-11-21 16:33:31,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-11-21 16:33:31,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:31,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:31,810 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 218 flow. Second operand 3 states and 220 transitions. [2022-11-21 16:33:31,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 298 flow [2022-11-21 16:33:31,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:33:31,819 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 238 flow [2022-11-21 16:33:31,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2022-11-21 16:33:31,821 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2022-11-21 16:33:31,827 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 238 flow [2022-11-21 16:33:31,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 16:33:31,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:31,830 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] [2022-11-21 16:33:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:33:31,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262809, now seen corresponding path program 1 times [2022-11-21 16:33:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:31,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940806927] [2022-11-21 16:33:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:31,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:31,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:31,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940806927] [2022-11-21 16:33:31,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940806927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:31,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:31,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:33:31,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408755432] [2022-11-21 16:33:31,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:31,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:33:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:33:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:33:31,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-21 16:33:31,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 16:33:31,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:31,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-21 16:33:31,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:32,116 INFO L130 PetriNetUnfolder]: 64/602 cut-off events. [2022-11-21 16:33:32,116 INFO L131 PetriNetUnfolder]: For 204/220 co-relation queries the response was YES. [2022-11-21 16:33:32,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 602 events. 64/602 cut-off events. For 204/220 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4048 event pairs, 26 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 931. Up to 87 conditions per place. [2022-11-21 16:33:32,122 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2022-11-21 16:33:32,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 322 flow [2022-11-21 16:33:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:33:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:33:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-11-21 16:33:32,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2022-11-21 16:33:32,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-11-21 16:33:32,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-11-21 16:33:32,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:32,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-11-21 16:33:32,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2022-11-21 16:33:32,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:32,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2022-11-21 16:33:32,128 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 238 flow. Second operand 3 states and 219 transitions. [2022-11-21 16:33:32,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 322 flow [2022-11-21 16:33:32,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:32,138 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 252 flow [2022-11-21 16:33:32,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2022-11-21 16:33:32,141 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2022-11-21 16:33:32,141 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 252 flow [2022-11-21 16:33:32,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2022-11-21 16:33:32,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:32,142 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] [2022-11-21 16:33:32,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:33:32,143 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash 363553065, now seen corresponding path program 1 times [2022-11-21 16:33:32,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:32,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297711187] [2022-11-21 16:33:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:32,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:32,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297711187] [2022-11-21 16:33:32,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297711187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:32,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655188571] [2022-11-21 16:33:32,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:32,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:32,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:32,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2022-11-21 16:33:32,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:32,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:32,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:32,444 INFO L130 PetriNetUnfolder]: 79/385 cut-off events. [2022-11-21 16:33:32,444 INFO L131 PetriNetUnfolder]: For 227/317 co-relation queries the response was YES. [2022-11-21 16:33:32,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 385 events. 79/385 cut-off events. For 227/317 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2288 event pairs, 34 based on Foata normal form. 9/345 useless extension candidates. Maximal degree in co-relation 850. Up to 158 conditions per place. [2022-11-21 16:33:32,449 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 36 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-11-21 16:33:32,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 102 transitions, 412 flow [2022-11-21 16:33:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2022-11-21 16:33:32,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8345679012345679 [2022-11-21 16:33:32,451 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2022-11-21 16:33:32,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2022-11-21 16:33:32,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:32,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2022-11-21 16:33:32,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2022-11-21 16:33:32,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:32,456 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:32,456 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 252 flow. Second operand 5 states and 338 transitions. [2022-11-21 16:33:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 102 transitions, 412 flow [2022-11-21 16:33:32,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:33:32,460 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 280 flow [2022-11-21 16:33:32,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2022-11-21 16:33:32,464 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-11-21 16:33:32,464 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 280 flow [2022-11-21 16:33:32,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2022-11-21 16:33:32,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:32,465 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:33:32,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:33:32,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1964963806, now seen corresponding path program 1 times [2022-11-21 16:33:32,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:32,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210031881] [2022-11-21 16:33:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:32,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:33:32,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210031881] [2022-11-21 16:33:32,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210031881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:32,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:32,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32559947] [2022-11-21 16:33:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:32,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:32,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2022-11-21 16:33:32,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:32,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:32,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:32,697 INFO L130 PetriNetUnfolder]: 90/419 cut-off events. [2022-11-21 16:33:32,697 INFO L131 PetriNetUnfolder]: For 228/326 co-relation queries the response was YES. [2022-11-21 16:33:32,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 419 events. 90/419 cut-off events. For 228/326 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2529 event pairs, 13 based on Foata normal form. 28/423 useless extension candidates. Maximal degree in co-relation 987. Up to 93 conditions per place. [2022-11-21 16:33:32,703 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-11-21 16:33:32,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 412 flow [2022-11-21 16:33:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2022-11-21 16:33:32,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.817283950617284 [2022-11-21 16:33:32,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 331 transitions. [2022-11-21 16:33:32,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 331 transitions. [2022-11-21 16:33:32,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:32,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 331 transitions. [2022-11-21 16:33:32,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2022-11-21 16:33:32,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:32,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:32,709 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 280 flow. Second operand 5 states and 331 transitions. [2022-11-21 16:33:32,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 412 flow [2022-11-21 16:33:32,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:33:32,714 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 298 flow [2022-11-21 16:33:32,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2022-11-21 16:33:32,716 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-11-21 16:33:32,717 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 298 flow [2022-11-21 16:33:32,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 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) [2022-11-21 16:33:32,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:32,718 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] [2022-11-21 16:33:32,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:33:32,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -317074780, now seen corresponding path program 1 times [2022-11-21 16:33:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:32,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698988529] [2022-11-21 16:33:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:32,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:32,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698988529] [2022-11-21 16:33:32,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698988529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:32,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:32,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563687164] [2022-11-21 16:33:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:32,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:32,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:32,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:32,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:32,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:32,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:33,083 INFO L130 PetriNetUnfolder]: 184/1024 cut-off events. [2022-11-21 16:33:33,083 INFO L131 PetriNetUnfolder]: For 637/704 co-relation queries the response was YES. [2022-11-21 16:33:33,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1024 events. 184/1024 cut-off events. For 637/704 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8159 event pairs, 32 based on Foata normal form. 37/1047 useless extension candidates. Maximal degree in co-relation 2224. Up to 144 conditions per place. [2022-11-21 16:33:33,094 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 28 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2022-11-21 16:33:33,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 456 flow [2022-11-21 16:33:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2022-11-21 16:33:33,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-11-21 16:33:33,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2022-11-21 16:33:33,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2022-11-21 16:33:33,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:33,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2022-11-21 16:33:33,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 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) [2022-11-21 16:33:33,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:33,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:33,100 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 298 flow. Second operand 5 states and 357 transitions. [2022-11-21 16:33:33,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 456 flow [2022-11-21 16:33:33,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:33:33,105 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 380 flow [2022-11-21 16:33:33,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2022-11-21 16:33:33,106 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2022-11-21 16:33:33,107 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 380 flow [2022-11-21 16:33:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:33,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:33,107 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] [2022-11-21 16:33:33,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:33:33,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1458265281, now seen corresponding path program 1 times [2022-11-21 16:33:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:33,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615888213] [2022-11-21 16:33:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:33,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615888213] [2022-11-21 16:33:33,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615888213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:33,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:33,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489393721] [2022-11-21 16:33:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:33,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:33,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:33,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:33,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:33,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:33,424 INFO L130 PetriNetUnfolder]: 233/1132 cut-off events. [2022-11-21 16:33:33,424 INFO L131 PetriNetUnfolder]: For 1220/1309 co-relation queries the response was YES. [2022-11-21 16:33:33,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 1132 events. 233/1132 cut-off events. For 1220/1309 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8944 event pairs, 15 based on Foata normal form. 55/1177 useless extension candidates. Maximal degree in co-relation 2629. Up to 206 conditions per place. [2022-11-21 16:33:33,483 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 30 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2022-11-21 16:33:33,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 557 flow [2022-11-21 16:33:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2022-11-21 16:33:33,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2022-11-21 16:33:33,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2022-11-21 16:33:33,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2022-11-21 16:33:33,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:33,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2022-11-21 16:33:33,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 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) [2022-11-21 16:33:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:33,490 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:33,490 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 380 flow. Second operand 5 states and 354 transitions. [2022-11-21 16:33:33,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 557 flow [2022-11-21 16:33:33,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 555 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-21 16:33:33,498 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 450 flow [2022-11-21 16:33:33,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2022-11-21 16:33:33,499 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2022-11-21 16:33:33,500 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 450 flow [2022-11-21 16:33:33,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:33,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:33,500 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] [2022-11-21 16:33:33,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:33:33,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:33,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320492, now seen corresponding path program 1 times [2022-11-21 16:33:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:33,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105484556] [2022-11-21 16:33:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:33,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105484556] [2022-11-21 16:33:33,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105484556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:33,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:33,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239749124] [2022-11-21 16:33:33,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:33,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:33,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:33,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:33,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:33,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:33,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:33,760 INFO L130 PetriNetUnfolder]: 132/814 cut-off events. [2022-11-21 16:33:33,760 INFO L131 PetriNetUnfolder]: For 1160/1210 co-relation queries the response was YES. [2022-11-21 16:33:33,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 814 events. 132/814 cut-off events. For 1160/1210 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5894 event pairs, 83 based on Foata normal form. 32/834 useless extension candidates. Maximal degree in co-relation 1879. Up to 231 conditions per place. [2022-11-21 16:33:33,769 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 21 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-11-21 16:33:33,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 433 flow [2022-11-21 16:33:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:33:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:33:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-21 16:33:33,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2022-11-21 16:33:33,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-21 16:33:33,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-21 16:33:33,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:33,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-21 16:33:33,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2022-11-21 16:33:33,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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) [2022-11-21 16:33:33,775 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 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) [2022-11-21 16:33:33,775 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 450 flow. Second operand 4 states and 272 transitions. [2022-11-21 16:33:33,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 433 flow [2022-11-21 16:33:33,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 92 transitions, 406 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-21 16:33:33,782 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 364 flow [2022-11-21 16:33:33,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2022-11-21 16:33:33,784 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 28 predicate places. [2022-11-21 16:33:33,784 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 364 flow [2022-11-21 16:33:33,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:33,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:33,785 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] [2022-11-21 16:33:33,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:33:33,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320491, now seen corresponding path program 1 times [2022-11-21 16:33:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:33,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165674288] [2022-11-21 16:33:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:33,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165674288] [2022-11-21 16:33:33,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165674288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:33,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:33,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193027528] [2022-11-21 16:33:33,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:33,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:33,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:33,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:33,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:33,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:33,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:34,089 INFO L130 PetriNetUnfolder]: 152/901 cut-off events. [2022-11-21 16:33:34,089 INFO L131 PetriNetUnfolder]: For 687/699 co-relation queries the response was YES. [2022-11-21 16:33:34,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 901 events. 152/901 cut-off events. For 687/699 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6605 event pairs, 6 based on Foata normal form. 21/921 useless extension candidates. Maximal degree in co-relation 1988. Up to 199 conditions per place. [2022-11-21 16:33:34,098 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 30 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2022-11-21 16:33:34,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 478 flow [2022-11-21 16:33:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2022-11-21 16:33:34,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-21 16:33:34,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2022-11-21 16:33:34,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2022-11-21 16:33:34,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:34,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2022-11-21 16:33:34,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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) [2022-11-21 16:33:34,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:34,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:34,103 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 364 flow. Second operand 5 states and 351 transitions. [2022-11-21 16:33:34,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 478 flow [2022-11-21 16:33:34,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:34,109 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 387 flow [2022-11-21 16:33:34,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2022-11-21 16:33:34,109 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-11-21 16:33:34,110 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 387 flow [2022-11-21 16:33:34,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2022-11-21 16:33:34,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:34,110 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:33:34,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:33:34,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash 784336079, now seen corresponding path program 1 times [2022-11-21 16:33:34,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:34,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507755646] [2022-11-21 16:33:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:34,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:34,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507755646] [2022-11-21 16:33:34,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507755646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599363098] [2022-11-21 16:33:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:34,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:34,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:34,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:33:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:34,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:34,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:34,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:34,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599363098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:34,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:34,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:33:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321564755] [2022-11-21 16:33:34,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:34,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:34,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:34,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:34,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 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) [2022-11-21 16:33:34,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:34,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:34,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:34,644 INFO L130 PetriNetUnfolder]: 96/447 cut-off events. [2022-11-21 16:33:34,644 INFO L131 PetriNetUnfolder]: For 597/630 co-relation queries the response was YES. [2022-11-21 16:33:34,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 447 events. 96/447 cut-off events. For 597/630 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2683 event pairs, 5 based on Foata normal form. 23/451 useless extension candidates. Maximal degree in co-relation 1221. Up to 88 conditions per place. [2022-11-21 16:33:34,650 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 41 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2022-11-21 16:33:34,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 618 flow [2022-11-21 16:33:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2022-11-21 16:33:34,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8059964726631393 [2022-11-21 16:33:34,653 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2022-11-21 16:33:34,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2022-11-21 16:33:34,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:34,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2022-11-21 16:33:34,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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) [2022-11-21 16:33:34,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 16:33:34,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 16:33:34,658 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 387 flow. Second operand 7 states and 457 transitions. [2022-11-21 16:33:34,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 618 flow [2022-11-21 16:33:34,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 596 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:34,664 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 385 flow [2022-11-21 16:33:34,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2022-11-21 16:33:34,666 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-11-21 16:33:34,666 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 385 flow [2022-11-21 16:33:34,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 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) [2022-11-21 16:33:34,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:34,667 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:33:34,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:34,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 16:33:34,874 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:34,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1998744924, now seen corresponding path program 1 times [2022-11-21 16:33:34,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:34,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368021143] [2022-11-21 16:33:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:33:34,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:34,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368021143] [2022-11-21 16:33:34,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368021143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:34,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:34,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:33:34,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077933650] [2022-11-21 16:33:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:34,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:33:34,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:33:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:33:34,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:34,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2022-11-21 16:33:34,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:34,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:34,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:35,049 INFO L130 PetriNetUnfolder]: 103/426 cut-off events. [2022-11-21 16:33:35,050 INFO L131 PetriNetUnfolder]: For 633/676 co-relation queries the response was YES. [2022-11-21 16:33:35,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 426 events. 103/426 cut-off events. For 633/676 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2309 event pairs, 9 based on Foata normal form. 28/439 useless extension candidates. Maximal degree in co-relation 1207. Up to 98 conditions per place. [2022-11-21 16:33:35,056 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2022-11-21 16:33:35,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 535 flow [2022-11-21 16:33:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:33:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:33:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 323 transitions. [2022-11-21 16:33:35,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7975308641975308 [2022-11-21 16:33:35,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 323 transitions. [2022-11-21 16:33:35,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 323 transitions. [2022-11-21 16:33:35,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:35,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 323 transitions. [2022-11-21 16:33:35,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:33:35,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:35,061 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2022-11-21 16:33:35,061 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 385 flow. Second operand 5 states and 323 transitions. [2022-11-21 16:33:35,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 535 flow [2022-11-21 16:33:35,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 524 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:33:35,066 INFO L231 Difference]: Finished difference. Result has 115 places, 92 transitions, 394 flow [2022-11-21 16:33:35,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=115, PETRI_TRANSITIONS=92} [2022-11-21 16:33:35,067 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2022-11-21 16:33:35,068 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 92 transitions, 394 flow [2022-11-21 16:33:35,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2022-11-21 16:33:35,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:35,068 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:33:35,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:33:35,069 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1831550754, now seen corresponding path program 1 times [2022-11-21 16:33:35,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:35,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41937759] [2022-11-21 16:33:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:35,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:35,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41937759] [2022-11-21 16:33:35,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41937759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646556631] [2022-11-21 16:33:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:35,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:35,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:35,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:33:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:35,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:35,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:35,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:35,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646556631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:35,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:35,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:33:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127333661] [2022-11-21 16:33:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:35,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:35,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:35,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 92 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-11-21 16:33:35,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:35,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:35,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:35,522 INFO L130 PetriNetUnfolder]: 82/385 cut-off events. [2022-11-21 16:33:35,522 INFO L131 PetriNetUnfolder]: For 573/599 co-relation queries the response was YES. [2022-11-21 16:33:35,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 385 events. 82/385 cut-off events. For 573/599 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2095 event pairs, 3 based on Foata normal form. 20/395 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-11-21 16:33:35,529 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 36 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-11-21 16:33:35,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 585 flow [2022-11-21 16:33:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2022-11-21 16:33:35,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971781305114638 [2022-11-21 16:33:35,532 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2022-11-21 16:33:35,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2022-11-21 16:33:35,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:35,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2022-11-21 16:33:35,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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) [2022-11-21 16:33:35,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 16:33:35,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2022-11-21 16:33:35,537 INFO L175 Difference]: Start difference. First operand has 115 places, 92 transitions, 394 flow. Second operand 7 states and 452 transitions. [2022-11-21 16:33:35,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 585 flow [2022-11-21 16:33:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:33:35,543 INFO L231 Difference]: Finished difference. Result has 117 places, 91 transitions, 390 flow [2022-11-21 16:33:35,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=117, PETRI_TRANSITIONS=91} [2022-11-21 16:33:35,544 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-11-21 16:33:35,544 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 390 flow [2022-11-21 16:33:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-11-21 16:33:35,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:35,545 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:33:35,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:33:35,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:35,753 INFO L85 PathProgramCache]: Analyzing trace with hash 338958765, now seen corresponding path program 1 times [2022-11-21 16:33:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:35,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585287344] [2022-11-21 16:33:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:35,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:35,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585287344] [2022-11-21 16:33:35,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585287344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:35,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071897872] [2022-11-21 16:33:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:35,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:35,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:33:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:35,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:33:35,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:36,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:36,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071897872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:36,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:36,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-21 16:33:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179178412] [2022-11-21 16:33:36,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:33:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:33:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:36,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:36,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 91 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2022-11-21 16:33:36,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:36,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:36,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:36,389 INFO L130 PetriNetUnfolder]: 148/906 cut-off events. [2022-11-21 16:33:36,389 INFO L131 PetriNetUnfolder]: For 1165/1191 co-relation queries the response was YES. [2022-11-21 16:33:36,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 906 events. 148/906 cut-off events. For 1165/1191 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5889 event pairs, 6 based on Foata normal form. 68/968 useless extension candidates. Maximal degree in co-relation 2154. Up to 77 conditions per place. [2022-11-21 16:33:36,400 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 33 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-11-21 16:33:36,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 582 flow [2022-11-21 16:33:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:33:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:33:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2022-11-21 16:33:36,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595679012345679 [2022-11-21 16:33:36,403 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 557 transitions. [2022-11-21 16:33:36,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 557 transitions. [2022-11-21 16:33:36,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:36,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 557 transitions. [2022-11-21 16:33:36,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 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) [2022-11-21 16:33:36,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 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) [2022-11-21 16:33:36,407 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 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) [2022-11-21 16:33:36,408 INFO L175 Difference]: Start difference. First operand has 117 places, 91 transitions, 390 flow. Second operand 8 states and 557 transitions. [2022-11-21 16:33:36,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 582 flow [2022-11-21 16:33:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 569 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-21 16:33:36,415 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 497 flow [2022-11-21 16:33:36,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2022-11-21 16:33:36,416 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-11-21 16:33:36,416 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 497 flow [2022-11-21 16:33:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2022-11-21 16:33:36,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:36,417 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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] [2022-11-21 16:33:36,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:36,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 16:33:36,624 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash -147926171, now seen corresponding path program 1 times [2022-11-21 16:33:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:36,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546957328] [2022-11-21 16:33:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:36,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546957328] [2022-11-21 16:33:36,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546957328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734853753] [2022-11-21 16:33:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:36,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:36,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:33:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:36,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:33:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:36,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:37,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734853753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:37,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:37,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-21 16:33:37,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892968103] [2022-11-21 16:33:37,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:37,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:33:37,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:33:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:33:37,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:37,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 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) [2022-11-21 16:33:37,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:37,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:37,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:37,441 INFO L130 PetriNetUnfolder]: 154/1070 cut-off events. [2022-11-21 16:33:37,441 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-21 16:33:37,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1070 events. 154/1070 cut-off events. For 2165/2195 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6685 event pairs, 0 based on Foata normal form. 72/1141 useless extension candidates. Maximal degree in co-relation 2697. Up to 91 conditions per place. [2022-11-21 16:33:37,455 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 43 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2022-11-21 16:33:37,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 764 flow [2022-11-21 16:33:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:33:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:33:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2022-11-21 16:33:37,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584995251661919 [2022-11-21 16:33:37,459 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 904 transitions. [2022-11-21 16:33:37,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 904 transitions. [2022-11-21 16:33:37,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:37,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 904 transitions. [2022-11-21 16:33:37,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.53846153846153) internal successors, (904), 13 states have internal predecessors, (904), 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) [2022-11-21 16:33:37,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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) [2022-11-21 16:33:37,466 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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) [2022-11-21 16:33:37,467 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 497 flow. Second operand 13 states and 904 transitions. [2022-11-21 16:33:37,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 764 flow [2022-11-21 16:33:37,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 711 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-21 16:33:37,477 INFO L231 Difference]: Finished difference. Result has 139 places, 99 transitions, 543 flow [2022-11-21 16:33:37,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=139, PETRI_TRANSITIONS=99} [2022-11-21 16:33:37,479 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-11-21 16:33:37,479 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 99 transitions, 543 flow [2022-11-21 16:33:37,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 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) [2022-11-21 16:33:37,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:37,480 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:33:37,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:33:37,687 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2001455967, now seen corresponding path program 1 times [2022-11-21 16:33:37,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:37,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834855603] [2022-11-21 16:33:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:37,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834855603] [2022-11-21 16:33:37,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834855603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:37,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766438445] [2022-11-21 16:33:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:37,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:37,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:37,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:37,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:33:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:37,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:33:37,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:38,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:38,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766438445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:38,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:38,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-21 16:33:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834661734] [2022-11-21 16:33:38,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:33:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:33:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:33:38,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-21 16:33:38,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 99 transitions, 543 flow. Second operand has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 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) [2022-11-21 16:33:38,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:38,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-21 16:33:38,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:38,926 INFO L130 PetriNetUnfolder]: 203/1426 cut-off events. [2022-11-21 16:33:38,926 INFO L131 PetriNetUnfolder]: For 3330/3362 co-relation queries the response was YES. [2022-11-21 16:33:38,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3663 conditions, 1426 events. 203/1426 cut-off events. For 3330/3362 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8892 event pairs, 6 based on Foata normal form. 50/1470 useless extension candidates. Maximal degree in co-relation 3610. Up to 118 conditions per place. [2022-11-21 16:33:38,944 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 53 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2022-11-21 16:33:38,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 944 flow [2022-11-21 16:33:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:33:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:33:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1109 transitions. [2022-11-21 16:33:38,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557098765432098 [2022-11-21 16:33:38,947 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1109 transitions. [2022-11-21 16:33:38,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1109 transitions. [2022-11-21 16:33:38,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:38,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1109 transitions. [2022-11-21 16:33:38,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 69.3125) internal successors, (1109), 16 states have internal predecessors, (1109), 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) [2022-11-21 16:33:38,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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) [2022-11-21 16:33:38,955 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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) [2022-11-21 16:33:38,955 INFO L175 Difference]: Start difference. First operand has 139 places, 99 transitions, 543 flow. Second operand 16 states and 1109 transitions. [2022-11-21 16:33:38,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 944 flow [2022-11-21 16:33:38,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 929 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-21 16:33:38,969 INFO L231 Difference]: Finished difference. Result has 157 places, 107 transitions, 694 flow [2022-11-21 16:33:38,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=694, PETRI_PLACES=157, PETRI_TRANSITIONS=107} [2022-11-21 16:33:38,970 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 76 predicate places. [2022-11-21 16:33:38,970 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 107 transitions, 694 flow [2022-11-21 16:33:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 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) [2022-11-21 16:33:38,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:38,971 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:38,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:39,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:33:39,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-21 16:33:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1182725167, now seen corresponding path program 2 times [2022-11-21 16:33:39,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:39,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389648145] [2022-11-21 16:33:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:39,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:39,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389648145] [2022-11-21 16:33:39,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389648145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:39,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43304315] [2022-11-21 16:33:39,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:33:39,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:39,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:39,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:39,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:33:39,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:33:39,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:33:39,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:33:39,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:33:39,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:39,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43304315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:39,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:39,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2022-11-21 16:33:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729202824] [2022-11-21 16:33:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:39,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:33:39,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:33:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:33:40,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-21 16:33:40,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 107 transitions, 694 flow. Second operand has 13 states, 13 states have (on average 64.92307692307692) internal successors, (844), 13 states have internal predecessors, (844), 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) [2022-11-21 16:33:40,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:40,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-21 16:33:40,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:40,710 INFO L130 PetriNetUnfolder]: 465/1469 cut-off events. [2022-11-21 16:33:40,711 INFO L131 PetriNetUnfolder]: For 6342/6348 co-relation queries the response was YES. [2022-11-21 16:33:40,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 1469 events. 465/1469 cut-off events. For 6342/6348 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9841 event pairs, 4 based on Foata normal form. 26/1431 useless extension candidates. Maximal degree in co-relation 5683. Up to 428 conditions per place. [2022-11-21 16:33:40,732 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 238/238 dead transitions. [2022-11-21 16:33:40,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 238 transitions, 2475 flow [2022-11-21 16:33:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:33:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:33:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1159 transitions. [2022-11-21 16:33:40,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7949245541838135 [2022-11-21 16:33:40,737 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1159 transitions. [2022-11-21 16:33:40,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1159 transitions. [2022-11-21 16:33:40,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:40,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1159 transitions. [2022-11-21 16:33:40,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 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) [2022-11-21 16:33:40,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 81.0) internal successors, (1539), 19 states have internal predecessors, (1539), 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) [2022-11-21 16:33:40,747 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 81.0) internal successors, (1539), 19 states have internal predecessors, (1539), 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) [2022-11-21 16:33:40,747 INFO L175 Difference]: Start difference. First operand has 157 places, 107 transitions, 694 flow. Second operand 18 states and 1159 transitions. [2022-11-21 16:33:40,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 238 transitions, 2475 flow [2022-11-21 16:33:40,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 238 transitions, 1845 flow, removed 4 selfloop flow, removed 31 redundant places. [2022-11-21 16:33:40,763 INFO L231 Difference]: Finished difference. Result has 138 places, 0 transitions, 0 flow [2022-11-21 16:33:40,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=138, PETRI_TRANSITIONS=0} [2022-11-21 16:33:40,764 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 57 predicate places. [2022-11-21 16:33:40,764 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 0 transitions, 0 flow [2022-11-21 16:33:40,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 64.92307692307692) internal successors, (844), 13 states have internal predecessors, (844), 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) [2022-11-21 16:33:40,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-21 16:33:40,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-21 16:33:40,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-21 16:33:40,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-21 16:33:40,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-21 16:33:40,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-21 16:33:40,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-21 16:33:40,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-21 16:33:40,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-21 16:33:40,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-21 16:33:40,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-21 16:33:40,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-21 16:33:40,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-21 16:33:40,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-21 16:33:40,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-21 16:33:40,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-21 16:33:40,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-21 16:33:40,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-21 16:33:40,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:40,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 16:33:40,978 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:40,983 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:33:40,983 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:33:40,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:33:40 BasicIcfg [2022-11-21 16:33:40,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:33:40,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:33:40,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:33:40,990 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:33:40,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:33:29" (3/4) ... [2022-11-21 16:33:40,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:33:40,999 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-21 16:33:40,999 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-21 16:33:41,007 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-21 16:33:41,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 16:33:41,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:33:41,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:33:41,041 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:33:41,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:33:41,042 INFO L158 Benchmark]: Toolchain (without parser) took 12594.60ms. Allocated memory was 176.2MB in the beginning and 278.9MB in the end (delta: 102.8MB). Free memory was 146.0MB in the beginning and 89.8MB in the end (delta: 56.2MB). Peak memory consumption was 157.2MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,042 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:33:41,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 693.90ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 131.2MB in the end (delta: 14.6MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.37ms. Allocated memory is still 176.2MB. Free memory was 131.2MB in the beginning and 130.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,043 INFO L158 Benchmark]: Boogie Preprocessor took 56.32ms. Allocated memory is still 176.2MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,043 INFO L158 Benchmark]: RCFGBuilder took 563.51ms. Allocated memory is still 176.2MB. Free memory was 127.9MB in the beginning and 135.9MB in the end (delta: -7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,044 INFO L158 Benchmark]: TraceAbstraction took 11146.49ms. Allocated memory was 176.2MB in the beginning and 278.9MB in the end (delta: 102.8MB). Free memory was 135.9MB in the beginning and 92.9MB in the end (delta: 43.0MB). Peak memory consumption was 148.5MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,044 INFO L158 Benchmark]: Witness Printer took 51.49ms. Allocated memory is still 278.9MB. Free memory was 92.9MB in the beginning and 89.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:33:41,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 693.90ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 131.2MB in the end (delta: 14.6MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.37ms. Allocated memory is still 176.2MB. Free memory was 131.2MB in the beginning and 130.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.32ms. Allocated memory is still 176.2MB. Free memory was 130.0MB in the beginning and 127.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 563.51ms. Allocated memory is still 176.2MB. Free memory was 127.9MB in the beginning and 135.9MB in the end (delta: -7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11146.49ms. Allocated memory was 176.2MB in the beginning and 278.9MB in the end (delta: 102.8MB). Free memory was 135.9MB in the beginning and 92.9MB in the end (delta: 43.0MB). Peak memory consumption was 148.5MB. Max. memory is 16.1GB. * Witness Printer took 51.49ms. Allocated memory is still 278.9MB. Free memory was 92.9MB in the beginning and 89.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.0s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 488 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 488 mSDsluCounter, 130 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 816 IncrementalHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 64 mSDtfsCounter, 816 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 658 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=694occurred in iteration=17, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1146 NumberOfCodeBlocks, 1146 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1293 ConstructedInterpolants, 0 QuantifiedInterpolants, 3003 SizeOfPredicates, 28 NumberOfNonLiveVariables, 962 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 215/581 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:33:41,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fdaac2-5207-49b1-8f7d-b48182dd716a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE