./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:44:13,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:44:13,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:44:13,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:44:13,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:44:13,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:44:13,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:44:13,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:44:13,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:44:13,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:44:13,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:44:13,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:44:13,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:44:13,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:44:13,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:44:13,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:44:13,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:44:13,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:44:13,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:44:13,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:44:13,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:44:13,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:44:13,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:44:13,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:44:13,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:44:13,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:44:13,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:44:13,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:44:13,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:44:13,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:44:13,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:44:13,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:44:13,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:44:13,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:44:13,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:44:13,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:44:13,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:44:13,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:44:13,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:44:13,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:44:13,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:44:13,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:44:13,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:44:13,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:44:13,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:44:13,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:44:13,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:44:13,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:44:13,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:44:13,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:44:13,742 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:44:13,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:44:13,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:44:13,744 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:44:13,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:44:13,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:44:13,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:44:13,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:44:13,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:44:13,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:44:13,745 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:44:13,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:44:13,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:44:13,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:44:13,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:44:13,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:44:13,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:44:13,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:44:13,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:44:13,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:44:13,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:44:13,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:44:13,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:44:13,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:44:13,750 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:44:13,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:44:13,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:44:13,750 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_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2022-11-16 12:44:14,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:44:14,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:44:14,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:44:14,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:44:14,037 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:44:14,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2022-11-16 12:44:14,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/data/03675c124/0e0c50ef7e4a4f7ea3441f472389f152/FLAG642b65050 [2022-11-16 12:44:14,573 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:44:14,573 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/sv-benchmarks/c/pthread/triangular-longer-2.i [2022-11-16 12:44:14,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/data/03675c124/0e0c50ef7e4a4f7ea3441f472389f152/FLAG642b65050 [2022-11-16 12:44:14,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/data/03675c124/0e0c50ef7e4a4f7ea3441f472389f152 [2022-11-16 12:44:14,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:44:14,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:44:14,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:14,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:44:14,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:44:14,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:14" (1/1) ... [2022-11-16 12:44:14,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b897ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:14, skipping insertion in model container [2022-11-16 12:44:14,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:14" (1/1) ... [2022-11-16 12:44:14,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:44:15,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:44:15,360 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-11-16 12:44:15,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:15,370 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:44:15,418 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-11-16 12:44:15,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:15,452 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:44:15,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15 WrapperNode [2022-11-16 12:44:15,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:15,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:15,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:44:15,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:44:15,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,492 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-16 12:44:15,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:15,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:44:15,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:44:15,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:44:15,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,515 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:44:15,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:44:15,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:44:15,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:44:15,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (1/1) ... [2022-11-16 12:44:15,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:44:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:15,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:15,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:44:15,611 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 12:44:15,611 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 12:44:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 12:44:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 12:44:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:44:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:44:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:44:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:44:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:44:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:44:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:44:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:44:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:44:15,617 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:44:15,802 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:44:15,804 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:44:16,013 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:44:16,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:44:16,036 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:44:16,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:16 BoogieIcfgContainer [2022-11-16 12:44:16,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:44:16,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:44:16,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:44:16,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:44:16,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:44:14" (1/3) ... [2022-11-16 12:44:16,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d266a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:16, skipping insertion in model container [2022-11-16 12:44:16,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:15" (2/3) ... [2022-11-16 12:44:16,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d266a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:16, skipping insertion in model container [2022-11-16 12:44:16,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:16" (3/3) ... [2022-11-16 12:44:16,048 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2022-11-16 12:44:16,056 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:44:16,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:44:16,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:44:16,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:44:16,121 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:44:16,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-11-16 12:44:16,197 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-11-16 12:44:16,198 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:44:16,204 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. [2022-11-16 12:44:16,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-11-16 12:44:16,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-11-16 12:44:16,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:44:16,246 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;@ed6668a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:44:16,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 12:44:16,269 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-11-16 12:44:16,269 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:44:16,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:16,270 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] [2022-11-16 12:44:16,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:16,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517197, now seen corresponding path program 1 times [2022-11-16 12:44:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:16,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23831154] [2022-11-16 12:44:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:16,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:16,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:16,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23831154] [2022-11-16 12:44:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23831154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:16,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:16,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:44:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536769984] [2022-11-16 12:44:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:16,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:16,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-16 12:44:16,725 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) [2022-11-16 12:44:16,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:16,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-16 12:44:16,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:16,872 INFO L130 PetriNetUnfolder]: 61/298 cut-off events. [2022-11-16 12:44:16,872 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:44:16,875 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. [2022-11-16 12:44:16,879 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 11 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2022-11-16 12:44:16,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 194 flow [2022-11-16 12:44:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:44:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-16 12:44:16,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-11-16 12:44:16,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-16 12:44:16,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-16 12:44:16,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:16,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-16 12:44:16,904 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) [2022-11-16 12:44:16,909 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) [2022-11-16 12:44:16,910 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) [2022-11-16 12:44:16,911 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 164 flow. Second operand 3 states and 225 transitions. [2022-11-16 12:44:16,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 194 flow [2022-11-16 12:44:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:44:16,918 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 176 flow [2022-11-16 12:44:16,921 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} [2022-11-16 12:44:16,924 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2022-11-16 12:44:16,925 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 176 flow [2022-11-16 12:44:16,925 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) [2022-11-16 12:44:16,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:16,926 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] [2022-11-16 12:44:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:44:16,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517196, now seen corresponding path program 1 times [2022-11-16 12:44:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497134706] [2022-11-16 12:44:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:16,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:17,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:17,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497134706] [2022-11-16 12:44:17,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497134706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:17,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:17,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:44:17,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777116707] [2022-11-16 12:44:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:17,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:17,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-16 12:44:17,071 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) [2022-11-16 12:44:17,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:17,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-16 12:44:17,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:17,228 INFO L130 PetriNetUnfolder]: 51/313 cut-off events. [2022-11-16 12:44:17,232 INFO L131 PetriNetUnfolder]: For 64/78 co-relation queries the response was YES. [2022-11-16 12:44:17,234 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. [2022-11-16 12:44:17,238 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 11 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2022-11-16 12:44:17,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 218 flow [2022-11-16 12:44:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:17,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:44:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-16 12:44:17,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.897119341563786 [2022-11-16 12:44:17,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-16 12:44:17,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-16 12:44:17,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:17,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-16 12:44:17,255 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) [2022-11-16 12:44:17,258 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) [2022-11-16 12:44:17,258 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) [2022-11-16 12:44:17,258 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 176 flow. Second operand 3 states and 218 transitions. [2022-11-16 12:44:17,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 218 flow [2022-11-16 12:44:17,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:44:17,263 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 190 flow [2022-11-16 12:44:17,265 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} [2022-11-16 12:44:17,265 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-11-16 12:44:17,266 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 190 flow [2022-11-16 12:44:17,266 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) [2022-11-16 12:44:17,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:17,268 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] [2022-11-16 12:44:17,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:44:17,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 649821270, now seen corresponding path program 1 times [2022-11-16 12:44:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:17,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796205280] [2022-11-16 12:44:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:17,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796205280] [2022-11-16 12:44:17,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796205280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:17,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:17,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452845237] [2022-11-16 12:44:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:17,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:17,456 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) [2022-11-16 12:44:17,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:17,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:17,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:17,637 INFO L130 PetriNetUnfolder]: 97/367 cut-off events. [2022-11-16 12:44:17,637 INFO L131 PetriNetUnfolder]: For 155/227 co-relation queries the response was YES. [2022-11-16 12:44:17,643 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. [2022-11-16 12:44:17,646 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-11-16 12:44:17,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 360 flow [2022-11-16 12:44:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2022-11-16 12:44:17,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8419753086419753 [2022-11-16 12:44:17,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 341 transitions. [2022-11-16 12:44:17,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 341 transitions. [2022-11-16 12:44:17,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:17,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 341 transitions. [2022-11-16 12:44:17,655 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) [2022-11-16 12:44:17,659 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) [2022-11-16 12:44:17,660 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) [2022-11-16 12:44:17,660 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 190 flow. Second operand 5 states and 341 transitions. [2022-11-16 12:44:17,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 360 flow [2022-11-16 12:44:17,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 100 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:17,664 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 218 flow [2022-11-16 12:44:17,664 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} [2022-11-16 12:44:17,665 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2022-11-16 12:44:17,665 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 218 flow [2022-11-16 12:44:17,665 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) [2022-11-16 12:44:17,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:17,666 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] [2022-11-16 12:44:17,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:44:17,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262810, now seen corresponding path program 1 times [2022-11-16 12:44:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467979182] [2022-11-16 12:44:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:17,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467979182] [2022-11-16 12:44:17,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467979182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:17,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:17,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:44:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765011191] [2022-11-16 12:44:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:17,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-16 12:44:17,773 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) [2022-11-16 12:44:17,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:17,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-16 12:44:17,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:17,910 INFO L130 PetriNetUnfolder]: 74/623 cut-off events. [2022-11-16 12:44:17,911 INFO L131 PetriNetUnfolder]: For 106/124 co-relation queries the response was YES. [2022-11-16 12:44:17,913 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. [2022-11-16 12:44:17,919 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-11-16 12:44:17,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 298 flow [2022-11-16 12:44:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:44:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-11-16 12:44:17,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9053497942386831 [2022-11-16 12:44:17,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-11-16 12:44:17,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-11-16 12:44:17,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:17,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-11-16 12:44:17,927 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) [2022-11-16 12:44:17,928 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) [2022-11-16 12:44:17,929 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) [2022-11-16 12:44:17,929 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 218 flow. Second operand 3 states and 220 transitions. [2022-11-16 12:44:17,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 298 flow [2022-11-16 12:44:17,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:17,936 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 238 flow [2022-11-16 12:44:17,936 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} [2022-11-16 12:44:17,938 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2022-11-16 12:44:17,943 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 238 flow [2022-11-16 12:44:17,943 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) [2022-11-16 12:44:17,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:17,944 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] [2022-11-16 12:44:17,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:44:17,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262809, now seen corresponding path program 1 times [2022-11-16 12:44:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:17,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987963585] [2022-11-16 12:44:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987963585] [2022-11-16 12:44:18,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987963585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:18,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:18,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:44:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480900360] [2022-11-16 12:44:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:18,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:44:18,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:44:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:18,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-16 12:44:18,069 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) [2022-11-16 12:44:18,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:18,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-16 12:44:18,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:18,226 INFO L130 PetriNetUnfolder]: 64/602 cut-off events. [2022-11-16 12:44:18,226 INFO L131 PetriNetUnfolder]: For 204/220 co-relation queries the response was YES. [2022-11-16 12:44:18,229 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. [2022-11-16 12:44:18,232 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2022-11-16 12:44:18,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 322 flow [2022-11-16 12:44:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:44:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-11-16 12:44:18,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2022-11-16 12:44:18,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-11-16 12:44:18,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-11-16 12:44:18,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:18,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-11-16 12:44:18,236 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) [2022-11-16 12:44:18,236 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) [2022-11-16 12:44:18,237 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) [2022-11-16 12:44:18,237 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 238 flow. Second operand 3 states and 219 transitions. [2022-11-16 12:44:18,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 322 flow [2022-11-16 12:44:18,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:44:18,247 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 252 flow [2022-11-16 12:44:18,247 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} [2022-11-16 12:44:18,251 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2022-11-16 12:44:18,251 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 252 flow [2022-11-16 12:44:18,251 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) [2022-11-16 12:44:18,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:18,252 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] [2022-11-16 12:44:18,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:44:18,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash 363553065, now seen corresponding path program 1 times [2022-11-16 12:44:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:18,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599170753] [2022-11-16 12:44:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:18,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599170753] [2022-11-16 12:44:18,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599170753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:18,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:18,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265749635] [2022-11-16 12:44:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:18,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:18,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:18,392 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) [2022-11-16 12:44:18,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:18,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:18,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:18,553 INFO L130 PetriNetUnfolder]: 79/385 cut-off events. [2022-11-16 12:44:18,553 INFO L131 PetriNetUnfolder]: For 227/317 co-relation queries the response was YES. [2022-11-16 12:44:18,555 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. [2022-11-16 12:44:18,559 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 36 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-11-16 12:44:18,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 102 transitions, 412 flow [2022-11-16 12:44:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2022-11-16 12:44:18,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8345679012345679 [2022-11-16 12:44:18,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2022-11-16 12:44:18,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2022-11-16 12:44:18,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:18,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2022-11-16 12:44:18,563 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) [2022-11-16 12:44:18,565 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) [2022-11-16 12:44:18,565 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) [2022-11-16 12:44:18,566 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 252 flow. Second operand 5 states and 338 transitions. [2022-11-16 12:44:18,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 102 transitions, 412 flow [2022-11-16 12:44:18,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:18,570 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 280 flow [2022-11-16 12:44:18,570 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} [2022-11-16 12:44:18,571 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-11-16 12:44:18,571 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 280 flow [2022-11-16 12:44:18,571 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) [2022-11-16 12:44:18,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:18,572 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] [2022-11-16 12:44:18,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:44:18,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1964963806, now seen corresponding path program 1 times [2022-11-16 12:44:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:18,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694245397] [2022-11-16 12:44:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:18,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694245397] [2022-11-16 12:44:18,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694245397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:18,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:18,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:18,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47711561] [2022-11-16 12:44:18,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:18,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:18,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:18,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:18,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:18,633 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) [2022-11-16 12:44:18,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:18,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:18,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:18,749 INFO L130 PetriNetUnfolder]: 90/419 cut-off events. [2022-11-16 12:44:18,750 INFO L131 PetriNetUnfolder]: For 228/326 co-relation queries the response was YES. [2022-11-16 12:44:18,752 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. [2022-11-16 12:44:18,755 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-11-16 12:44:18,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 412 flow [2022-11-16 12:44:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2022-11-16 12:44:18,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.817283950617284 [2022-11-16 12:44:18,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 331 transitions. [2022-11-16 12:44:18,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 331 transitions. [2022-11-16 12:44:18,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:18,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 331 transitions. [2022-11-16 12:44:18,759 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) [2022-11-16 12:44:18,760 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) [2022-11-16 12:44:18,761 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) [2022-11-16 12:44:18,761 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 280 flow. Second operand 5 states and 331 transitions. [2022-11-16 12:44:18,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 412 flow [2022-11-16 12:44:18,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:18,765 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 298 flow [2022-11-16 12:44:18,765 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} [2022-11-16 12:44:18,766 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-11-16 12:44:18,766 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 298 flow [2022-11-16 12:44:18,767 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) [2022-11-16 12:44:18,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:18,767 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] [2022-11-16 12:44:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:44:18,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash -317074780, now seen corresponding path program 1 times [2022-11-16 12:44:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:18,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884924182] [2022-11-16 12:44:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:18,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884924182] [2022-11-16 12:44:18,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884924182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:18,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:18,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:18,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041160555] [2022-11-16 12:44:18,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:18,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:18,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:18,833 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) [2022-11-16 12:44:18,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:18,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:18,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:19,050 INFO L130 PetriNetUnfolder]: 184/1024 cut-off events. [2022-11-16 12:44:19,051 INFO L131 PetriNetUnfolder]: For 637/704 co-relation queries the response was YES. [2022-11-16 12:44:19,056 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. [2022-11-16 12:44:19,062 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 28 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2022-11-16 12:44:19,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 456 flow [2022-11-16 12:44:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2022-11-16 12:44:19,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-11-16 12:44:19,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2022-11-16 12:44:19,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2022-11-16 12:44:19,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:19,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2022-11-16 12:44:19,070 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) [2022-11-16 12:44:19,071 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) [2022-11-16 12:44:19,072 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) [2022-11-16 12:44:19,072 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 298 flow. Second operand 5 states and 357 transitions. [2022-11-16 12:44:19,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 456 flow [2022-11-16 12:44:19,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:44:19,078 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 380 flow [2022-11-16 12:44:19,078 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} [2022-11-16 12:44:19,080 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2022-11-16 12:44:19,080 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 380 flow [2022-11-16 12:44:19,081 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) [2022-11-16 12:44:19,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:19,081 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] [2022-11-16 12:44:19,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:44:19,082 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:19,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1458265281, now seen corresponding path program 1 times [2022-11-16 12:44:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:19,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099575927] [2022-11-16 12:44:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:19,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:19,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099575927] [2022-11-16 12:44:19,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099575927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:19,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:19,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:19,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949276183] [2022-11-16 12:44:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:19,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:19,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:19,167 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) [2022-11-16 12:44:19,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:19,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:19,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:19,394 INFO L130 PetriNetUnfolder]: 233/1132 cut-off events. [2022-11-16 12:44:19,394 INFO L131 PetriNetUnfolder]: For 1220/1309 co-relation queries the response was YES. [2022-11-16 12:44:19,400 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. [2022-11-16 12:44:19,406 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 30 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2022-11-16 12:44:19,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 557 flow [2022-11-16 12:44:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2022-11-16 12:44:19,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2022-11-16 12:44:19,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2022-11-16 12:44:19,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2022-11-16 12:44:19,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:19,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2022-11-16 12:44:19,410 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) [2022-11-16 12:44:19,411 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) [2022-11-16 12:44:19,412 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) [2022-11-16 12:44:19,412 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 380 flow. Second operand 5 states and 354 transitions. [2022-11-16 12:44:19,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 557 flow [2022-11-16 12:44:19,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 555 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-16 12:44:19,419 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 450 flow [2022-11-16 12:44:19,419 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} [2022-11-16 12:44:19,420 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2022-11-16 12:44:19,420 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 450 flow [2022-11-16 12:44:19,421 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) [2022-11-16 12:44:19,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:19,421 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] [2022-11-16 12:44:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:44:19,422 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320492, now seen corresponding path program 1 times [2022-11-16 12:44:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438222487] [2022-11-16 12:44:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:19,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:19,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438222487] [2022-11-16 12:44:19,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438222487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:19,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:19,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:19,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801334692] [2022-11-16 12:44:19,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:19,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:19,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:19,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:19,503 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) [2022-11-16 12:44:19,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:19,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:19,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:19,657 INFO L130 PetriNetUnfolder]: 132/814 cut-off events. [2022-11-16 12:44:19,657 INFO L131 PetriNetUnfolder]: For 1160/1210 co-relation queries the response was YES. [2022-11-16 12:44:19,663 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. [2022-11-16 12:44:19,667 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 21 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-11-16 12:44:19,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 433 flow [2022-11-16 12:44:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:44:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:44:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-16 12:44:19,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2022-11-16 12:44:19,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-16 12:44:19,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-16 12:44:19,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:19,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-16 12:44:19,671 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) [2022-11-16 12:44:19,672 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) [2022-11-16 12:44:19,672 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) [2022-11-16 12:44:19,673 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 450 flow. Second operand 4 states and 272 transitions. [2022-11-16 12:44:19,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 433 flow [2022-11-16 12:44:19,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 92 transitions, 406 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-16 12:44:19,680 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 364 flow [2022-11-16 12:44:19,681 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} [2022-11-16 12:44:19,681 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 28 predicate places. [2022-11-16 12:44:19,682 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 364 flow [2022-11-16 12:44:19,682 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) [2022-11-16 12:44:19,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:19,682 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] [2022-11-16 12:44:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:44:19,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:19,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320491, now seen corresponding path program 1 times [2022-11-16 12:44:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:19,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448431760] [2022-11-16 12:44:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:19,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448431760] [2022-11-16 12:44:19,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448431760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:19,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:19,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:19,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570307469] [2022-11-16 12:44:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:19,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:19,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:19,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:19,758 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) [2022-11-16 12:44:19,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:19,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:19,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:19,936 INFO L130 PetriNetUnfolder]: 152/901 cut-off events. [2022-11-16 12:44:19,937 INFO L131 PetriNetUnfolder]: For 687/699 co-relation queries the response was YES. [2022-11-16 12:44:19,943 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. [2022-11-16 12:44:19,948 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 30 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2022-11-16 12:44:19,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 478 flow [2022-11-16 12:44:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2022-11-16 12:44:19,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-16 12:44:19,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2022-11-16 12:44:19,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2022-11-16 12:44:19,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:19,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2022-11-16 12:44:19,954 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) [2022-11-16 12:44:19,955 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) [2022-11-16 12:44:19,955 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) [2022-11-16 12:44:19,956 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 364 flow. Second operand 5 states and 351 transitions. [2022-11-16 12:44:19,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 478 flow [2022-11-16 12:44:19,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:44:19,962 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 387 flow [2022-11-16 12:44:19,963 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} [2022-11-16 12:44:19,963 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-11-16 12:44:19,963 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 387 flow [2022-11-16 12:44:19,964 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) [2022-11-16 12:44:19,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:19,964 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] [2022-11-16 12:44:19,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:44:19,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash 784336079, now seen corresponding path program 1 times [2022-11-16 12:44:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:19,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686882193] [2022-11-16 12:44:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:20,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:20,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686882193] [2022-11-16 12:44:20,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686882193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:20,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704770211] [2022-11-16 12:44:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:20,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:20,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:20,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:20,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:44:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:20,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:44:20,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:20,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:20,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704770211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:20,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:20,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:44:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135406443] [2022-11-16 12:44:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:44:20,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:20,257 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) [2022-11-16 12:44:20,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:20,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:20,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:20,438 INFO L130 PetriNetUnfolder]: 96/447 cut-off events. [2022-11-16 12:44:20,438 INFO L131 PetriNetUnfolder]: For 597/630 co-relation queries the response was YES. [2022-11-16 12:44:20,441 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. [2022-11-16 12:44:20,445 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 41 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2022-11-16 12:44:20,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 618 flow [2022-11-16 12:44:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:44:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:44:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2022-11-16 12:44:20,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8059964726631393 [2022-11-16 12:44:20,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2022-11-16 12:44:20,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2022-11-16 12:44:20,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:20,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2022-11-16 12:44:20,451 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) [2022-11-16 12:44:20,453 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) [2022-11-16 12:44:20,454 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) [2022-11-16 12:44:20,454 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 387 flow. Second operand 7 states and 457 transitions. [2022-11-16 12:44:20,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 618 flow [2022-11-16 12:44:20,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 596 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-16 12:44:20,461 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 385 flow [2022-11-16 12:44:20,461 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} [2022-11-16 12:44:20,462 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-11-16 12:44:20,463 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 385 flow [2022-11-16 12:44:20,463 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) [2022-11-16 12:44:20,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:20,463 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] [2022-11-16 12:44:20,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:20,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:44:20,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1998744924, now seen corresponding path program 1 times [2022-11-16 12:44:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:20,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674984663] [2022-11-16 12:44:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:20,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:20,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674984663] [2022-11-16 12:44:20,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674984663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:20,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:20,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:44:20,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141445569] [2022-11-16 12:44:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:20,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:44:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:44:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:44:20,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:20,763 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) [2022-11-16 12:44:20,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:20,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:20,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:20,878 INFO L130 PetriNetUnfolder]: 103/426 cut-off events. [2022-11-16 12:44:20,878 INFO L131 PetriNetUnfolder]: For 633/676 co-relation queries the response was YES. [2022-11-16 12:44:20,882 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. [2022-11-16 12:44:20,886 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2022-11-16 12:44:20,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 535 flow [2022-11-16 12:44:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:44:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:44:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 323 transitions. [2022-11-16 12:44:20,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7975308641975308 [2022-11-16 12:44:20,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 323 transitions. [2022-11-16 12:44:20,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 323 transitions. [2022-11-16 12:44:20,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:20,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 323 transitions. [2022-11-16 12:44:20,890 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) [2022-11-16 12:44:20,891 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) [2022-11-16 12:44:20,891 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) [2022-11-16 12:44:20,891 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 385 flow. Second operand 5 states and 323 transitions. [2022-11-16 12:44:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 535 flow [2022-11-16 12:44:20,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 524 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:44:20,897 INFO L231 Difference]: Finished difference. Result has 115 places, 92 transitions, 394 flow [2022-11-16 12:44:20,897 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} [2022-11-16 12:44:20,899 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2022-11-16 12:44:20,899 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 92 transitions, 394 flow [2022-11-16 12:44:20,899 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) [2022-11-16 12:44:20,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:20,899 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] [2022-11-16 12:44:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:44:20,900 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1831550754, now seen corresponding path program 1 times [2022-11-16 12:44:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:20,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943515899] [2022-11-16 12:44:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:20,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943515899] [2022-11-16 12:44:20,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943515899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:21,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037036579] [2022-11-16 12:44:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:21,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:21,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:21,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:21,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:44:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:21,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:44:21,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:21,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:21,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037036579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:21,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:21,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:44:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596740017] [2022-11-16 12:44:21,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:44:21,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:21,180 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) [2022-11-16 12:44:21,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:21,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:21,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:21,337 INFO L130 PetriNetUnfolder]: 82/385 cut-off events. [2022-11-16 12:44:21,359 INFO L131 PetriNetUnfolder]: For 573/599 co-relation queries the response was YES. [2022-11-16 12:44:21,362 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. [2022-11-16 12:44:21,365 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 36 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-11-16 12:44:21,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 585 flow [2022-11-16 12:44:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:44:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:44:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2022-11-16 12:44:21,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971781305114638 [2022-11-16 12:44:21,368 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2022-11-16 12:44:21,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2022-11-16 12:44:21,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:21,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2022-11-16 12:44:21,370 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) [2022-11-16 12:44:21,372 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) [2022-11-16 12:44:21,372 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) [2022-11-16 12:44:21,372 INFO L175 Difference]: Start difference. First operand has 115 places, 92 transitions, 394 flow. Second operand 7 states and 452 transitions. [2022-11-16 12:44:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 585 flow [2022-11-16 12:44:21,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:44:21,378 INFO L231 Difference]: Finished difference. Result has 117 places, 91 transitions, 390 flow [2022-11-16 12:44:21,378 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} [2022-11-16 12:44:21,379 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-11-16 12:44:21,379 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 390 flow [2022-11-16 12:44:21,379 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) [2022-11-16 12:44:21,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:21,380 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] [2022-11-16 12:44:21,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:44:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:44:21,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash 338958765, now seen corresponding path program 1 times [2022-11-16 12:44:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:21,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518676911] [2022-11-16 12:44:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:21,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518676911] [2022-11-16 12:44:21,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518676911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453174260] [2022-11-16 12:44:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:21,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:21,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:21,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:21,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:44:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:21,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:44:21,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:21,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:21,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453174260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:21,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:21,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 12:44:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316541934] [2022-11-16 12:44:21,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:21,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:44:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:44:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:44:21,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:21,920 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) [2022-11-16 12:44:21,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:21,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:21,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:22,124 INFO L130 PetriNetUnfolder]: 148/906 cut-off events. [2022-11-16 12:44:22,125 INFO L131 PetriNetUnfolder]: For 1165/1191 co-relation queries the response was YES. [2022-11-16 12:44:22,132 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. [2022-11-16 12:44:22,136 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 33 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-11-16 12:44:22,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 582 flow [2022-11-16 12:44:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:44:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:44:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2022-11-16 12:44:22,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595679012345679 [2022-11-16 12:44:22,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 557 transitions. [2022-11-16 12:44:22,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 557 transitions. [2022-11-16 12:44:22,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:22,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 557 transitions. [2022-11-16 12:44:22,142 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) [2022-11-16 12:44:22,144 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) [2022-11-16 12:44:22,145 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) [2022-11-16 12:44:22,145 INFO L175 Difference]: Start difference. First operand has 117 places, 91 transitions, 390 flow. Second operand 8 states and 557 transitions. [2022-11-16 12:44:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 582 flow [2022-11-16 12:44:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 569 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 12:44:22,152 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 497 flow [2022-11-16 12:44:22,152 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} [2022-11-16 12:44:22,153 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-11-16 12:44:22,153 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 497 flow [2022-11-16 12:44:22,153 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) [2022-11-16 12:44:22,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:22,154 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] [2022-11-16 12:44:22,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:22,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:44:22,359 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:22,360 INFO L85 PathProgramCache]: Analyzing trace with hash -147926171, now seen corresponding path program 1 times [2022-11-16 12:44:22,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:22,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309811577] [2022-11-16 12:44:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:22,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:22,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309811577] [2022-11-16 12:44:22,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309811577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:22,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058510164] [2022-11-16 12:44:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:22,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:22,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:22,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:44:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:22,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:44:22,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:22,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:22,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058510164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:22,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:22,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-16 12:44:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448149074] [2022-11-16 12:44:22,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:22,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:22,826 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) [2022-11-16 12:44:22,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:22,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:22,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:23,155 INFO L130 PetriNetUnfolder]: 154/1070 cut-off events. [2022-11-16 12:44:23,155 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-16 12:44:23,165 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. [2022-11-16 12:44:23,171 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 43 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2022-11-16 12:44:23,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 764 flow [2022-11-16 12:44:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:44:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:44:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2022-11-16 12:44:23,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584995251661919 [2022-11-16 12:44:23,175 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 904 transitions. [2022-11-16 12:44:23,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 904 transitions. [2022-11-16 12:44:23,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:23,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 904 transitions. [2022-11-16 12:44:23,178 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) [2022-11-16 12:44:23,181 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) [2022-11-16 12:44:23,182 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) [2022-11-16 12:44:23,183 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 497 flow. Second operand 13 states and 904 transitions. [2022-11-16 12:44:23,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 764 flow [2022-11-16 12:44:23,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 711 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-16 12:44:23,193 INFO L231 Difference]: Finished difference. Result has 139 places, 99 transitions, 543 flow [2022-11-16 12:44:23,194 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} [2022-11-16 12:44:23,195 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-11-16 12:44:23,195 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 99 transitions, 543 flow [2022-11-16 12:44:23,196 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) [2022-11-16 12:44:23,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:23,196 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] [2022-11-16 12:44:23,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:23,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:44:23,402 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2001455967, now seen corresponding path program 1 times [2022-11-16 12:44:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:23,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265685805] [2022-11-16 12:44:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:23,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:23,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265685805] [2022-11-16 12:44:23,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265685805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:23,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367742584] [2022-11-16 12:44:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:23,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:23,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:23,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:23,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:44:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:44:23,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:23,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:23,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367742584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:23,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:23,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-16 12:44:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001703585] [2022-11-16 12:44:23,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:23,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:23,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:44:23,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:23,987 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) [2022-11-16 12:44:23,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:23,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:23,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:24,508 INFO L130 PetriNetUnfolder]: 203/1426 cut-off events. [2022-11-16 12:44:24,508 INFO L131 PetriNetUnfolder]: For 3330/3362 co-relation queries the response was YES. [2022-11-16 12:44:24,520 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. [2022-11-16 12:44:24,528 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 53 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2022-11-16 12:44:24,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 944 flow [2022-11-16 12:44:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:44:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:44:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1109 transitions. [2022-11-16 12:44:24,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557098765432098 [2022-11-16 12:44:24,533 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1109 transitions. [2022-11-16 12:44:24,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1109 transitions. [2022-11-16 12:44:24,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:24,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1109 transitions. [2022-11-16 12:44:24,538 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) [2022-11-16 12:44:24,542 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) [2022-11-16 12:44:24,543 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) [2022-11-16 12:44:24,543 INFO L175 Difference]: Start difference. First operand has 139 places, 99 transitions, 543 flow. Second operand 16 states and 1109 transitions. [2022-11-16 12:44:24,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 944 flow [2022-11-16 12:44:24,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 929 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 12:44:24,558 INFO L231 Difference]: Finished difference. Result has 157 places, 107 transitions, 694 flow [2022-11-16 12:44:24,558 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} [2022-11-16 12:44:24,559 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 76 predicate places. [2022-11-16 12:44:24,559 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 107 transitions, 694 flow [2022-11-16 12:44:24,559 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) [2022-11-16 12:44:24,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:24,560 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] [2022-11-16 12:44:24,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:24,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:44:24,765 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:24,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:24,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1182725167, now seen corresponding path program 2 times [2022-11-16 12:44:24,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:24,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41741684] [2022-11-16 12:44:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:24,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:25,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:25,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41741684] [2022-11-16 12:44:25,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41741684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:25,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030440486] [2022-11-16 12:44:25,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:25,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:25,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:25,115 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:25,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:44:25,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:44:25,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:25,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:44:25,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:25,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:25,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030440486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:25,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:25,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-11-16 12:44:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28930879] [2022-11-16 12:44:25,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:25,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:44:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:44:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:44:25,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-16 12:44:25,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 107 transitions, 694 flow. Second operand has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:25,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:25,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-16 12:44:25,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:26,982 INFO L130 PetriNetUnfolder]: 311/2178 cut-off events. [2022-11-16 12:44:26,982 INFO L131 PetriNetUnfolder]: For 7111/7123 co-relation queries the response was YES. [2022-11-16 12:44:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 2178 events. 311/2178 cut-off events. For 7111/7123 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13086 event pairs, 3 based on Foata normal form. 78/2252 useless extension candidates. Maximal degree in co-relation 5682. Up to 178 conditions per place. [2022-11-16 12:44:27,013 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 91 selfloop transitions, 42 changer transitions 0/200 dead transitions. [2022-11-16 12:44:27,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 1489 flow [2022-11-16 12:44:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:44:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-16 12:44:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2013 transitions. [2022-11-16 12:44:27,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569604086845466 [2022-11-16 12:44:27,018 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2013 transitions. [2022-11-16 12:44:27,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2013 transitions. [2022-11-16 12:44:27,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:27,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2013 transitions. [2022-11-16 12:44:27,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 69.41379310344827) internal successors, (2013), 29 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:27,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:27,031 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:27,031 INFO L175 Difference]: Start difference. First operand has 157 places, 107 transitions, 694 flow. Second operand 29 states and 2013 transitions. [2022-11-16 12:44:27,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 1489 flow [2022-11-16 12:44:27,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 200 transitions, 1407 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:44:27,053 INFO L231 Difference]: Finished difference. Result has 191 places, 123 transitions, 956 flow [2022-11-16 12:44:27,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=956, PETRI_PLACES=191, PETRI_TRANSITIONS=123} [2022-11-16 12:44:27,054 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 110 predicate places. [2022-11-16 12:44:27,054 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 123 transitions, 956 flow [2022-11-16 12:44:27,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:27,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:27,056 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:27,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:27,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:44:27,261 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 12:44:27,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash 315234667, now seen corresponding path program 2 times [2022-11-16 12:44:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:27,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120776708] [2022-11-16 12:44:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:27,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:28,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:28,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120776708] [2022-11-16 12:44:28,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120776708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:28,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978085896] [2022-11-16 12:44:28,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:28,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:28,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:28,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:28,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:44:28,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:44:28,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:44:28,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 734 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:44:28,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:28,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978085896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:28,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:28,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [24] total 46 [2022-11-16 12:44:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657416170] [2022-11-16 12:44:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:44:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:44:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 12:44:28,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-16 12:44:28,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 123 transitions, 956 flow. Second operand has 23 states, 23 states have (on average 65.0) internal successors, (1495), 23 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:28,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:28,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-16 12:44:28,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:31,270 INFO L130 PetriNetUnfolder]: 1803/4970 cut-off events. [2022-11-16 12:44:31,270 INFO L131 PetriNetUnfolder]: For 25171/25187 co-relation queries the response was YES. [2022-11-16 12:44:31,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19919 conditions, 4970 events. 1803/4970 cut-off events. For 25171/25187 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 38388 event pairs, 2 based on Foata normal form. 51/4793 useless extension candidates. Maximal degree in co-relation 19867. Up to 1546 conditions per place. [2022-11-16 12:44:31,323 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 624/624 dead transitions. [2022-11-16 12:44:31,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 624 transitions, 7732 flow [2022-11-16 12:44:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:44:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 12:44:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2160 transitions. [2022-11-16 12:44:31,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8080808080808081 [2022-11-16 12:44:31,328 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2160 transitions. [2022-11-16 12:44:31,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2160 transitions. [2022-11-16 12:44:31,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:31,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2160 transitions. [2022-11-16 12:44:31,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.45454545454545) internal successors, (2160), 33 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:31,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:31,341 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:31,341 INFO L175 Difference]: Start difference. First operand has 191 places, 123 transitions, 956 flow. Second operand 33 states and 2160 transitions. [2022-11-16 12:44:31,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 624 transitions, 7732 flow [2022-11-16 12:44:31,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 624 transitions, 5412 flow, removed 32 selfloop flow, removed 49 redundant places. [2022-11-16 12:44:31,413 INFO L231 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2022-11-16 12:44:31,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2022-11-16 12:44:31,414 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 88 predicate places. [2022-11-16 12:44:31,414 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2022-11-16 12:44:31,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 65.0) internal successors, (1495), 23 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:31,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-16 12:44:31,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-16 12:44:31,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 12:44:31,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 12:44:31,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 12:44:31,419 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-16 12:44:31,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 12:44:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-16 12:44:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 12:44:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 12:44:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 12:44:31,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 12:44:31,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:44:31,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:31,627 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:31,632 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:44:31,632 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:44:31,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:44:31 BasicIcfg [2022-11-16 12:44:31,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:44:31,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:44:31,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:44:31,639 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:44:31,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:16" (3/4) ... [2022-11-16 12:44:31,642 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:44:31,649 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-16 12:44:31,649 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-16 12:44:31,652 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 12:44:31,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 12:44:31,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:44:31,653 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:44:31,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:44:31,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:44:31,683 INFO L158 Benchmark]: Toolchain (without parser) took 16760.89ms. Allocated memory was 104.9MB in the beginning and 302.0MB in the end (delta: 197.1MB). Free memory was 59.1MB in the beginning and 157.6MB in the end (delta: -98.5MB). Peak memory consumption was 98.7MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,683 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:44:31,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.25ms. Allocated memory is still 104.9MB. Free memory was 58.9MB in the beginning and 68.9MB in the end (delta: -10.0MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.94ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,684 INFO L158 Benchmark]: Boogie Preprocessor took 25.30ms. Allocated memory is still 104.9MB. Free memory was 66.8MB in the beginning and 65.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,684 INFO L158 Benchmark]: RCFGBuilder took 519.62ms. Allocated memory is still 104.9MB. Free memory was 65.5MB in the beginning and 51.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,685 INFO L158 Benchmark]: TraceAbstraction took 15597.34ms. Allocated memory was 104.9MB in the beginning and 302.0MB in the end (delta: 197.1MB). Free memory was 50.5MB in the beginning and 160.5MB in the end (delta: -110.0MB). Peak memory consumption was 215.6MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,685 INFO L158 Benchmark]: Witness Printer took 43.79ms. Allocated memory is still 302.0MB. Free memory was 160.5MB in the beginning and 157.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:44:31,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.25ms. Allocated memory is still 104.9MB. Free memory was 58.9MB in the beginning and 68.9MB in the end (delta: -10.0MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.94ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.30ms. Allocated memory is still 104.9MB. Free memory was 66.8MB in the beginning and 65.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.62ms. Allocated memory is still 104.9MB. Free memory was 65.5MB in the beginning and 51.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15597.34ms. Allocated memory was 104.9MB in the beginning and 302.0MB in the end (delta: 197.1MB). Free memory was 50.5MB in the beginning and 160.5MB in the end (delta: -110.0MB). Peak memory consumption was 215.6MB. Max. memory is 16.1GB. * Witness Printer took 43.79ms. Allocated memory is still 302.0MB. Free memory was 160.5MB in the beginning and 157.6MB in the end (delta: 2.9MB). 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: 15.5s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 914 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 914 mSDsluCounter, 160 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1219 IncrementalHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 73 mSDtfsCounter, 1219 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1013 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1553 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=956occurred in iteration=18, InterpolantAutomatonStates: 164, 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, 4.7s InterpolantComputationTime, 1514 NumberOfCodeBlocks, 1514 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1772 ConstructedInterpolants, 0 QuantifiedInterpolants, 4416 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1335 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 760/2262 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! [2022-11-16 12:44:31,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a01ca91-a647-4935-ac9c-e62604ebd638/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE