./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8 --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 f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 --- 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-2329fc7 [2022-12-13 16:50:19,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:50:19,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:50:19,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:50:19,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:50:19,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:50:19,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:50:19,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:50:19,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:50:19,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:50:19,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:50:19,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:50:19,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:50:19,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:50:19,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:50:19,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:50:19,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:50:19,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:50:19,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:50:19,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:50:19,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:50:19,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:50:19,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:50:19,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:50:19,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:50:19,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:50:19,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:50:19,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:50:19,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:50:19,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:50:19,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:50:19,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:50:19,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:50:19,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:50:19,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:50:19,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:50:19,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:50:19,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:50:19,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:50:19,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:50:19,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:50:19,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:50:19,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:50:19,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:50:19,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:50:19,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:50:19,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:50:19,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:50:19,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:50:19,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:50:19,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:50:19,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:50:19,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:50:19,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:50:19,646 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 [2022-12-13 16:50:19,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:50:19,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:50:19,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:50:19,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:50:19,855 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:50:19,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-lit/sssc12.i [2022-12-13 16:50:22,401 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:50:22,591 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:50:22,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/sv-benchmarks/c/pthread-lit/sssc12.i [2022-12-13 16:50:22,604 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/data/b2749ba92/78b669fa156b4e0f9fdb531ace466839/FLAGd40633d0e [2022-12-13 16:50:22,617 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/data/b2749ba92/78b669fa156b4e0f9fdb531ace466839 [2022-12-13 16:50:22,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:50:22,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:50:22,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:50:22,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:50:22,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:50:22,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:50:22" (1/1) ... [2022-12-13 16:50:22,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cfd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:22, skipping insertion in model container [2022-12-13 16:50:22,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:50:22" (1/1) ... [2022-12-13 16:50:22,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:50:22,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:50:22,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-12-13 16:50:22,982 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:50:22,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:50:22,984 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:50:22,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:50:22,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:50:23,005 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:50:23,039 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-12-13 16:50:23,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:50:23,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:50:23,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:50:23,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:50:23,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:50:23,079 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:50:23,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23 WrapperNode [2022-12-13 16:50:23,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:50:23,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:50:23,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:50:23,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:50:23,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,117 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-12-13 16:50:23,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:50:23,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:50:23,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:50:23,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:50:23,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:50:23,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:50:23,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:50:23,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:50:23,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (1/1) ... [2022-12-13 16:50:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:50:23,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:50:23,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:50:23,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46f934b3-3784-4385-96e5-1696a6c4a06e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-12-13 16:50:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:50:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:50:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:50:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:50:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:50:23,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:50:23,213 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:50:23,308 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:50:23,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:50:23,449 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:50:23,478 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:50:23,479 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 16:50:23,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:50:23 BoogieIcfgContainer [2022-12-13 16:50:23,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:50:23,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:50:23,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:50:23,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:50:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:50:22" (1/3) ... [2022-12-13 16:50:23,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12128725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:50:23, skipping insertion in model container [2022-12-13 16:50:23,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:50:23" (2/3) ... [2022-12-13 16:50:23,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12128725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:50:23, skipping insertion in model container [2022-12-13 16:50:23,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:50:23" (3/3) ... [2022-12-13 16:50:23,490 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-12-13 16:50:23,498 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:50:23,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:50:23,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 16:50:23,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:50:23,559 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:50:23,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2022-12-13 16:50:23,627 INFO L130 PetriNetUnfolder]: 7/105 cut-off events. [2022-12-13 16:50:23,628 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:23,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-12-13 16:50:23,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 93 transitions, 191 flow [2022-12-13 16:50:23,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 93 transitions, 191 flow [2022-12-13 16:50:23,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:50:23,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 93 transitions, 191 flow [2022-12-13 16:50:23,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 93 transitions, 191 flow [2022-12-13 16:50:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2022-12-13 16:50:23,670 INFO L130 PetriNetUnfolder]: 7/105 cut-off events. [2022-12-13 16:50:23,670 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:23,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-12-13 16:50:23,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2022-12-13 16:50:26,155 INFO L134 LiptonReduction]: Checked pairs total: 1308 [2022-12-13 16:50:26,155 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-12-13 16:50:26,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:50:26,171 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;@38de40c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:50:26,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 16:50:26,173 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 16:50:26,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:26,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:26,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:50:26,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 16:50:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 13715633, now seen corresponding path program 1 times [2022-12-13 16:50:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:26,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90939262] [2022-12-13 16:50:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:26,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90939262] [2022-12-13 16:50:26,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90939262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:26,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:26,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:50:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976320541] [2022-12-13 16:50:26,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:26,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:26,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 205 [2022-12-13 16:50:26,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2022-12-13 16:50:26,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:26,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 205 [2022-12-13 16:50:26,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:26,453 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2022-12-13 16:50:26,453 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:26,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 24 events. 9/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 40. Up to 19 conditions per place. [2022-12-13 16:50:26,454 INFO L137 encePairwiseOnDemand]: 197/205 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2022-12-13 16:50:26,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 11 transitions, 47 flow [2022-12-13 16:50:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-12-13 16:50:26,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4032520325203252 [2022-12-13 16:50:26,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-12-13 16:50:26,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-12-13 16:50:26,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:26,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-12-13 16:50:26,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2022-12-13 16:50:26,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2022-12-13 16:50:26,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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) [2022-12-13 16:50:26,484 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 35 flow. Second operand 3 states and 248 transitions. [2022-12-13 16:50:26,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 11 transitions, 47 flow [2022-12-13 16:50:26,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:50:26,488 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 27 flow [2022-12-13 16:50:26,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2022-12-13 16:50:26,492 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, -4 predicate places. [2022-12-13 16:50:26,492 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 27 flow [2022-12-13 16:50:26,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2022-12-13 16:50:26,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:26,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:50:26,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:50:26,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 16:50:26,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash 425185559, now seen corresponding path program 1 times [2022-12-13 16:50:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:26,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745939182] [2022-12-13 16:50:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:26,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745939182] [2022-12-13 16:50:26,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745939182] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:26,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:26,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:50:26,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069273208] [2022-12-13 16:50:26,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:26,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:50:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:50:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:50:26,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 205 [2022-12-13 16:50:26,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 27 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2022-12-13 16:50:26,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:26,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 205 [2022-12-13 16:50:26,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:26,718 INFO L130 PetriNetUnfolder]: 13/34 cut-off events. [2022-12-13 16:50:26,718 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:50:26,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 34 events. 13/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 63. Up to 19 conditions per place. [2022-12-13 16:50:26,719 INFO L137 encePairwiseOnDemand]: 201/205 looper letters, 11 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2022-12-13 16:50:26,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 15 transitions, 67 flow [2022-12-13 16:50:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:50:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:50:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2022-12-13 16:50:26,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3597560975609756 [2022-12-13 16:50:26,722 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 295 transitions. [2022-12-13 16:50:26,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 295 transitions. [2022-12-13 16:50:26,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:26,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 295 transitions. [2022-12-13 16:50:26,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2022-12-13 16:50:26,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2022-12-13 16:50:26,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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) [2022-12-13 16:50:26,727 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 27 flow. Second operand 4 states and 295 transitions. [2022-12-13 16:50:26,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 15 transitions, 67 flow [2022-12-13 16:50:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:50:26,728 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 37 flow [2022-12-13 16:50:26,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2022-12-13 16:50:26,729 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, -2 predicate places. [2022-12-13 16:50:26,729 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 37 flow [2022-12-13 16:50:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2022-12-13 16:50:26,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:26,730 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 16:50:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:50:26,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 16:50:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash 295772780, now seen corresponding path program 1 times [2022-12-13 16:50:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094571245] [2022-12-13 16:50:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:26,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:50:26,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:50:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:50:26,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:50:26,779 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:50:26,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 16:50:26,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 16:50:26,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 16:50:26,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 16:50:26,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 16:50:26,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 16:50:26,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 16:50:26,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 16:50:26,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 16:50:26,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 16:50:26,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 16:50:26,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 16:50:26,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 16:50:26,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:50:26,785 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 16:50:26,787 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:50:26,788 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 16:50:26,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:50:26,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 288 flow [2022-12-13 16:50:26,837 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-12-13 16:50:26,837 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:50:26,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 12/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 331 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-12-13 16:50:26,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 138 transitions, 288 flow [2022-12-13 16:50:26,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 138 transitions, 288 flow [2022-12-13 16:50:26,841 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:50:26,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 288 flow [2022-12-13 16:50:26,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 138 transitions, 288 flow [2022-12-13 16:50:26,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 288 flow [2022-12-13 16:50:26,863 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-12-13 16:50:26,863 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:50:26,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 12/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 331 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-12-13 16:50:26,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 6600 [2022-12-13 16:50:28,914 INFO L134 LiptonReduction]: Checked pairs total: 19976 [2022-12-13 16:50:28,914 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-12-13 16:50:28,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:50:28,916 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;@38de40c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:50:28,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 16:50:28,917 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 16:50:28,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:28,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:28,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:50:28,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 16:50:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash 716356562, now seen corresponding path program 1 times [2022-12-13 16:50:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:28,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129897464] [2022-12-13 16:50:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:28,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:28,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129897464] [2022-12-13 16:50:28,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129897464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:28,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:28,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:50:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643907669] [2022-12-13 16:50:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:28,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:28,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 260 [2022-12-13 16:50:28,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 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) [2022-12-13 16:50:28,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:28,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 260 [2022-12-13 16:50:28,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:29,085 INFO L130 PetriNetUnfolder]: 432/784 cut-off events. [2022-12-13 16:50:29,085 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 16:50:29,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 784 events. 432/784 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4059 event pairs, 180 based on Foata normal form. 76/670 useless extension candidates. Maximal degree in co-relation 754. Up to 423 conditions per place. [2022-12-13 16:50:29,089 INFO L137 encePairwiseOnDemand]: 246/260 looper letters, 43 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2022-12-13 16:50:29,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 231 flow [2022-12-13 16:50:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-12-13 16:50:29,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5038461538461538 [2022-12-13 16:50:29,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-12-13 16:50:29,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-12-13 16:50:29,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:29,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-12-13 16:50:29,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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) [2022-12-13 16:50:29,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-12-13 16:50:29,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-12-13 16:50:29,094 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 104 flow. Second operand 3 states and 393 transitions. [2022-12-13 16:50:29,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 231 flow [2022-12-13 16:50:29,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 229 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 16:50:29,095 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 129 flow [2022-12-13 16:50:29,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2022-12-13 16:50:29,096 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2022-12-13 16:50:29,096 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 129 flow [2022-12-13 16:50:29,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 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) [2022-12-13 16:50:29,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:29,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:29,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:50:29,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 16:50:29,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:29,097 INFO L85 PathProgramCache]: Analyzing trace with hash -645606011, now seen corresponding path program 1 times [2022-12-13 16:50:29,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:29,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635584737] [2022-12-13 16:50:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:29,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635584737] [2022-12-13 16:50:29,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635584737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:29,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:29,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:50:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785102474] [2022-12-13 16:50:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:29,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 260 [2022-12-13 16:50:29,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2022-12-13 16:50:29,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:29,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 260 [2022-12-13 16:50:29,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:29,269 INFO L130 PetriNetUnfolder]: 421/804 cut-off events. [2022-12-13 16:50:29,269 INFO L131 PetriNetUnfolder]: For 82/92 co-relation queries the response was YES. [2022-12-13 16:50:29,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 804 events. 421/804 cut-off events. For 82/92 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4483 event pairs, 182 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 1176. Up to 371 conditions per place. [2022-12-13 16:50:29,272 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 36 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-12-13 16:50:29,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 237 flow [2022-12-13 16:50:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-12-13 16:50:29,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.491025641025641 [2022-12-13 16:50:29,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-12-13 16:50:29,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-12-13 16:50:29,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:29,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-12-13 16:50:29,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2022-12-13 16:50:29,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-12-13 16:50:29,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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) [2022-12-13 16:50:29,277 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 129 flow. Second operand 3 states and 383 transitions. [2022-12-13 16:50:29,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 237 flow [2022-12-13 16:50:29,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:50:29,279 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 136 flow [2022-12-13 16:50:29,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2022-12-13 16:50:29,280 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2022-12-13 16:50:29,280 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 136 flow [2022-12-13 16:50:29,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2022-12-13 16:50:29,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:29,280 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 16:50:29,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:50:29,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-12-13 16:50:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1676028611, now seen corresponding path program 1 times [2022-12-13 16:50:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:29,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684945793] [2022-12-13 16:50:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:29,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:50:29,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:50:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:50:29,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:50:29,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:50:29,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 16:50:29,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-12-13 16:50:29,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-12-13 16:50:29,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-12-13 16:50:29,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-12-13 16:50:29,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-12-13 16:50:29,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-12-13 16:50:29,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-12-13 16:50:29,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-12-13 16:50:29,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-12-13 16:50:29,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-12-13 16:50:29,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-12-13 16:50:29,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:50:29,303 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 16:50:29,303 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:50:29,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 16:50:29,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:50:29,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 183 transitions, 387 flow [2022-12-13 16:50:29,340 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-12-13 16:50:29,340 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 16:50:29,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 17/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 607 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2022-12-13 16:50:29,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 183 transitions, 387 flow [2022-12-13 16:50:29,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 183 transitions, 387 flow [2022-12-13 16:50:29,343 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:50:29,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 183 transitions, 387 flow [2022-12-13 16:50:29,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 183 transitions, 387 flow [2022-12-13 16:50:29,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 183 transitions, 387 flow [2022-12-13 16:50:29,361 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-12-13 16:50:29,361 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 16:50:29,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 17/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 607 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2022-12-13 16:50:29,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 15840 [2022-12-13 16:50:31,630 INFO L134 LiptonReduction]: Checked pairs total: 46042 [2022-12-13 16:50:31,630 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-13 16:50:31,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:50:31,632 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;@38de40c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:50:31,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 16:50:31,634 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 16:50:31,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:31,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:31,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:50:31,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 16:50:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1082209713, now seen corresponding path program 1 times [2022-12-13 16:50:31,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:31,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910644128] [2022-12-13 16:50:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:31,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:31,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910644128] [2022-12-13 16:50:31,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910644128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:31,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:31,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:50:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313899301] [2022-12-13 16:50:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:31,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 339 [2022-12-13 16:50:31,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2022-12-13 16:50:31,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:31,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 339 [2022-12-13 16:50:31,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:32,596 INFO L130 PetriNetUnfolder]: 7934/11448 cut-off events. [2022-12-13 16:50:32,596 INFO L131 PetriNetUnfolder]: For 829/829 co-relation queries the response was YES. [2022-12-13 16:50:32,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22918 conditions, 11448 events. 7934/11448 cut-off events. For 829/829 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 71455 event pairs, 3042 based on Foata normal form. 862/9508 useless extension candidates. Maximal degree in co-relation 6616. Up to 8137 conditions per place. [2022-12-13 16:50:32,672 INFO L137 encePairwiseOnDemand]: 319/339 looper letters, 64 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2022-12-13 16:50:32,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 347 flow [2022-12-13 16:50:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-12-13 16:50:32,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142576204523107 [2022-12-13 16:50:32,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-12-13 16:50:32,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-12-13 16:50:32,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:32,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-12-13 16:50:32,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2022-12-13 16:50:32,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:32,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:32,679 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 153 flow. Second operand 3 states and 523 transitions. [2022-12-13 16:50:32,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 347 flow [2022-12-13 16:50:32,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 339 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 16:50:32,682 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 187 flow [2022-12-13 16:50:32,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2022-12-13 16:50:32,683 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2022-12-13 16:50:32,683 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 187 flow [2022-12-13 16:50:32,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2022-12-13 16:50:32,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:32,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:32,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:50:32,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 16:50:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash 238126886, now seen corresponding path program 1 times [2022-12-13 16:50:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:32,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913985241] [2022-12-13 16:50:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:32,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:32,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913985241] [2022-12-13 16:50:32,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913985241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:32,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:32,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:50:32,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20234862] [2022-12-13 16:50:32,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:32,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:32,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:32,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 339 [2022-12-13 16:50:32,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2022-12-13 16:50:32,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:32,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 339 [2022-12-13 16:50:32,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:33,639 INFO L130 PetriNetUnfolder]: 7848/11888 cut-off events. [2022-12-13 16:50:33,639 INFO L131 PetriNetUnfolder]: For 1687/2709 co-relation queries the response was YES. [2022-12-13 16:50:33,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25310 conditions, 11888 events. 7848/11888 cut-off events. For 1687/2709 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 80823 event pairs, 3529 based on Foata normal form. 14/8714 useless extension candidates. Maximal degree in co-relation 21154. Up to 6038 conditions per place. [2022-12-13 16:50:33,699 INFO L137 encePairwiseOnDemand]: 335/339 looper letters, 59 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2022-12-13 16:50:33,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 387 flow [2022-12-13 16:50:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-12-13 16:50:33,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5172074729596854 [2022-12-13 16:50:33,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-12-13 16:50:33,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-12-13 16:50:33,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:33,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-12-13 16:50:33,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2022-12-13 16:50:33,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:33,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:33,704 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 187 flow. Second operand 3 states and 526 transitions. [2022-12-13 16:50:33,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 387 flow [2022-12-13 16:50:33,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:50:33,709 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 198 flow [2022-12-13 16:50:33,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2022-12-13 16:50:33,710 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-12-13 16:50:33,710 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 198 flow [2022-12-13 16:50:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2022-12-13 16:50:33,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:33,711 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:33,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:50:33,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 16:50:33,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:33,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1207999998, now seen corresponding path program 1 times [2022-12-13 16:50:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:33,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193452559] [2022-12-13 16:50:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:33,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193452559] [2022-12-13 16:50:33,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193452559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:33,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:33,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:50:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865593522] [2022-12-13 16:50:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:33,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 339 [2022-12-13 16:50:33,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-12-13 16:50:33,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:33,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 339 [2022-12-13 16:50:33,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:34,585 INFO L130 PetriNetUnfolder]: 7247/11218 cut-off events. [2022-12-13 16:50:34,585 INFO L131 PetriNetUnfolder]: For 2572/3688 co-relation queries the response was YES. [2022-12-13 16:50:34,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 11218 events. 7247/11218 cut-off events. For 2572/3688 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 79246 event pairs, 3027 based on Foata normal form. 236/9109 useless extension candidates. Maximal degree in co-relation 12980. Up to 5369 conditions per place. [2022-12-13 16:50:34,626 INFO L137 encePairwiseOnDemand]: 336/339 looper letters, 60 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-12-13 16:50:34,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 389 flow [2022-12-13 16:50:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 16:50:34,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511307767944936 [2022-12-13 16:50:34,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 16:50:34,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 16:50:34,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:34,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 16:50:34,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-12-13 16:50:34,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:34,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:34,630 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 198 flow. Second operand 3 states and 520 transitions. [2022-12-13 16:50:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 389 flow [2022-12-13 16:50:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 385 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:50:34,633 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 193 flow [2022-12-13 16:50:34,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2022-12-13 16:50:34,633 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-12-13 16:50:34,634 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 193 flow [2022-12-13 16:50:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-12-13 16:50:34,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:34,634 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:34,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:50:34,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 16:50:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash -621643203, now seen corresponding path program 1 times [2022-12-13 16:50:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:34,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729913185] [2022-12-13 16:50:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:34,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:50:34,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:34,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729913185] [2022-12-13 16:50:34,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729913185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:34,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:34,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:50:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202979955] [2022-12-13 16:50:34,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:34,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:34,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 339 [2022-12-13 16:50:34,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-12-13 16:50:34,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:34,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 339 [2022-12-13 16:50:34,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:35,553 INFO L130 PetriNetUnfolder]: 7753/12170 cut-off events. [2022-12-13 16:50:35,553 INFO L131 PetriNetUnfolder]: For 2665/3399 co-relation queries the response was YES. [2022-12-13 16:50:35,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26207 conditions, 12170 events. 7753/12170 cut-off events. For 2665/3399 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 89225 event pairs, 3547 based on Foata normal form. 24/10026 useless extension candidates. Maximal degree in co-relation 13143. Up to 6080 conditions per place. [2022-12-13 16:50:35,608 INFO L137 encePairwiseOnDemand]: 335/339 looper letters, 59 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-13 16:50:35,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 387 flow [2022-12-13 16:50:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 16:50:35,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511307767944936 [2022-12-13 16:50:35,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 16:50:35,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 16:50:35,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:35,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 16:50:35,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2022-12-13 16:50:35,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:35,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 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) [2022-12-13 16:50:35,613 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 193 flow. Second operand 3 states and 520 transitions. [2022-12-13 16:50:35,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 387 flow [2022-12-13 16:50:35,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:50:35,616 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 199 flow [2022-12-13 16:50:35,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2022-12-13 16:50:35,617 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2022-12-13 16:50:35,617 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 199 flow [2022-12-13 16:50:35,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2022-12-13 16:50:35,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:35,617 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:35,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:50:35,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 16:50:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash -769311113, now seen corresponding path program 1 times [2022-12-13 16:50:35,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:35,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000680817] [2022-12-13 16:50:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:35,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:35,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000680817] [2022-12-13 16:50:35,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000680817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:35,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:35,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:50:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881652722] [2022-12-13 16:50:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:50:35,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:50:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:50:35,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 339 [2022-12-13 16:50:35,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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) [2022-12-13 16:50:35,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:35,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 339 [2022-12-13 16:50:35,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:37,155 INFO L130 PetriNetUnfolder]: 13533/19599 cut-off events. [2022-12-13 16:50:37,155 INFO L131 PetriNetUnfolder]: For 5728/5728 co-relation queries the response was YES. [2022-12-13 16:50:37,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46239 conditions, 19599 events. 13533/19599 cut-off events. For 5728/5728 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 137919 event pairs, 2515 based on Foata normal form. 0/17180 useless extension candidates. Maximal degree in co-relation 46056. Up to 9710 conditions per place. [2022-12-13 16:50:37,236 INFO L137 encePairwiseOnDemand]: 331/339 looper letters, 106 selfloop transitions, 10 changer transitions 0/136 dead transitions. [2022-12-13 16:50:37,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 650 flow [2022-12-13 16:50:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:50:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:50:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-12-13 16:50:37,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4790560471976401 [2022-12-13 16:50:37,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-12-13 16:50:37,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-12-13 16:50:37,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:37,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-12-13 16:50:37,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 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) [2022-12-13 16:50:37,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 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) [2022-12-13 16:50:37,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 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) [2022-12-13 16:50:37,241 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 199 flow. Second operand 5 states and 812 transitions. [2022-12-13 16:50:37,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 650 flow [2022-12-13 16:50:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:50:37,245 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 245 flow [2022-12-13 16:50:37,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2022-12-13 16:50:37,245 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2022-12-13 16:50:37,245 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 245 flow [2022-12-13 16:50:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 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) [2022-12-13 16:50:37,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:37,246 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 16:50:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:50:37,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 16:50:37,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1597380888, now seen corresponding path program 1 times [2022-12-13 16:50:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:37,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962228395] [2022-12-13 16:50:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:50:37,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 16:50:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 16:50:37,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 16:50:37,268 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 16:50:37,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 16:50:37,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-12-13 16:50:37,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-12-13 16:50:37,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-12-13 16:50:37,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-12-13 16:50:37,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-12-13 16:50:37,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-12-13 16:50:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-12-13 16:50:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-12-13 16:50:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-12-13 16:50:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-12-13 16:50:37,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-12-13 16:50:37,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:50:37,271 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 16:50:37,272 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 16:50:37,272 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 16:50:37,290 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:50:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 228 transitions, 488 flow [2022-12-13 16:50:37,315 INFO L130 PetriNetUnfolder]: 22/282 cut-off events. [2022-12-13 16:50:37,315 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 16:50:37,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 282 events. 22/282 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 880 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2022-12-13 16:50:37,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 228 transitions, 488 flow [2022-12-13 16:50:37,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 228 transitions, 488 flow [2022-12-13 16:50:37,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:50:37,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 228 transitions, 488 flow [2022-12-13 16:50:37,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 228 transitions, 488 flow [2022-12-13 16:50:37,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 228 transitions, 488 flow [2022-12-13 16:50:37,342 INFO L130 PetriNetUnfolder]: 22/282 cut-off events. [2022-12-13 16:50:37,342 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 16:50:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 282 events. 22/282 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 880 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2022-12-13 16:50:37,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-12-13 16:50:39,966 INFO L134 LiptonReduction]: Checked pairs total: 99194 [2022-12-13 16:50:39,966 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-12-13 16:50:39,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:50:39,967 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;@38de40c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:50:39,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 16:50:39,968 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 16:50:39,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:50:39,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:39,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:50:39,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:50:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1519282254, now seen corresponding path program 1 times [2022-12-13 16:50:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:39,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718593582] [2022-12-13 16:50:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:39,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718593582] [2022-12-13 16:50:39,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718593582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:39,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:39,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:50:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608853224] [2022-12-13 16:50:39,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:39,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:39,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:39,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:39,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:40,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 413 [2022-12-13 16:50:40,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2022-12-13 16:50:40,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:40,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 413 [2022-12-13 16:50:40,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:51,976 INFO L130 PetriNetUnfolder]: 139929/189005 cut-off events. [2022-12-13 16:50:51,977 INFO L131 PetriNetUnfolder]: For 20303/20303 co-relation queries the response was YES. [2022-12-13 16:50:52,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379517 conditions, 189005 events. 139929/189005 cut-off events. For 20303/20303 co-relation queries the response was YES. Maximal size of possible extension queue 10803. Compared 1450571 event pairs, 53253 based on Foata normal form. 8607/156682 useless extension candidates. Maximal degree in co-relation 27547. Up to 99439 conditions per place. [2022-12-13 16:50:53,049 INFO L137 encePairwiseOnDemand]: 387/413 looper letters, 81 selfloop transitions, 13 changer transitions 0/123 dead transitions. [2022-12-13 16:50:53,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 123 transitions, 487 flow [2022-12-13 16:50:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:50:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:50:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2022-12-13 16:50:53,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 16:50:53,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2022-12-13 16:50:53,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2022-12-13 16:50:53,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:53,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2022-12-13 16:50:53,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2022-12-13 16:50:53,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:50:53,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:50:53,057 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 204 flow. Second operand 3 states and 649 transitions. [2022-12-13 16:50:53,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 123 transitions, 487 flow [2022-12-13 16:50:53,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 469 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-12-13 16:50:53,069 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 298 flow [2022-12-13 16:50:53,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2022-12-13 16:50:53,070 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2022-12-13 16:50:53,070 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 298 flow [2022-12-13 16:50:53,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2022-12-13 16:50:53,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:53,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:50:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:50:53,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:50:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -146889142, now seen corresponding path program 1 times [2022-12-13 16:50:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:53,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653705930] [2022-12-13 16:50:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:50:53,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:53,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653705930] [2022-12-13 16:50:53,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653705930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:50:53,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:50:53,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:50:53,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156932796] [2022-12-13 16:50:53,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:50:53,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:50:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:50:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:50:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:50:53,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 413 [2022-12-13 16:50:53,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2022-12-13 16:50:53,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:50:53,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 413 [2022-12-13 16:50:53,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:03,358 INFO L130 PetriNetUnfolder]: 113653/152443 cut-off events. [2022-12-13 16:51:03,358 INFO L131 PetriNetUnfolder]: For 62531/64036 co-relation queries the response was YES. [2022-12-13 16:51:03,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350571 conditions, 152443 events. 113653/152443 cut-off events. For 62531/64036 co-relation queries the response was YES. Maximal size of possible extension queue 7817. Compared 1101939 event pairs, 36329 based on Foata normal form. 8635/125520 useless extension candidates. Maximal degree in co-relation 245350. Up to 91015 conditions per place. [2022-12-13 16:51:04,130 INFO L137 encePairwiseOnDemand]: 392/413 looper letters, 93 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2022-12-13 16:51:04,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 139 transitions, 665 flow [2022-12-13 16:51:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2022-12-13 16:51:04,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5157384987893463 [2022-12-13 16:51:04,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2022-12-13 16:51:04,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2022-12-13 16:51:04,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:04,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2022-12-13 16:51:04,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2022-12-13 16:51:04,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:51:04,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:51:04,136 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 298 flow. Second operand 3 states and 639 transitions. [2022-12-13 16:51:04,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 139 transitions, 665 flow [2022-12-13 16:51:04,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:04,231 INFO L231 Difference]: Finished difference. Result has 88 places, 109 transitions, 468 flow [2022-12-13 16:51:04,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=88, PETRI_TRANSITIONS=109} [2022-12-13 16:51:04,231 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2022-12-13 16:51:04,231 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 109 transitions, 468 flow [2022-12-13 16:51:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2022-12-13 16:51:04,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:04,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:04,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:51:04,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:51:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash 598660702, now seen corresponding path program 1 times [2022-12-13 16:51:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:04,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707740282] [2022-12-13 16:51:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707740282] [2022-12-13 16:51:04,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707740282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:04,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:04,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553695388] [2022-12-13 16:51:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:04,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:04,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:04,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:04,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 413 [2022-12-13 16:51:04,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2022-12-13 16:51:04,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:04,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 413 [2022-12-13 16:51:04,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:12,619 INFO L130 PetriNetUnfolder]: 85235/121422 cut-off events. [2022-12-13 16:51:12,620 INFO L131 PetriNetUnfolder]: For 94559/186705 co-relation queries the response was YES. [2022-12-13 16:51:12,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290739 conditions, 121422 events. 85235/121422 cut-off events. For 94559/186705 co-relation queries the response was YES. Maximal size of possible extension queue 6268. Compared 979357 event pairs, 36224 based on Foata normal form. 4674/95304 useless extension candidates. Maximal degree in co-relation 250015. Up to 59120 conditions per place. [2022-12-13 16:51:13,378 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 91 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2022-12-13 16:51:13,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 148 transitions, 817 flow [2022-12-13 16:51:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2022-12-13 16:51:13,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5246166263115416 [2022-12-13 16:51:13,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2022-12-13 16:51:13,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2022-12-13 16:51:13,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:13,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2022-12-13 16:51:13,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 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) [2022-12-13 16:51:13,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:51:13,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:51:13,384 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 468 flow. Second operand 3 states and 650 transitions. [2022-12-13 16:51:13,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 148 transitions, 817 flow [2022-12-13 16:51:13,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 769 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:13,517 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 444 flow [2022-12-13 16:51:13,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2022-12-13 16:51:13,517 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2022-12-13 16:51:13,517 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 444 flow [2022-12-13 16:51:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2022-12-13 16:51:13,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:13,518 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:51:13,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:51:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash -159572695, now seen corresponding path program 1 times [2022-12-13 16:51:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:13,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086246599] [2022-12-13 16:51:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:51:13,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:13,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086246599] [2022-12-13 16:51:13,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086246599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:13,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:13,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28849427] [2022-12-13 16:51:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:13,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:13,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:13,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:13,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 413 [2022-12-13 16:51:13,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2022-12-13 16:51:13,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:13,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 413 [2022-12-13 16:51:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:22,747 INFO L130 PetriNetUnfolder]: 98993/139773 cut-off events. [2022-12-13 16:51:22,747 INFO L131 PetriNetUnfolder]: For 79110/162839 co-relation queries the response was YES. [2022-12-13 16:51:23,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332098 conditions, 139773 events. 98993/139773 cut-off events. For 79110/162839 co-relation queries the response was YES. Maximal size of possible extension queue 7100. Compared 1123223 event pairs, 46062 based on Foata normal form. 4443/112297 useless extension candidates. Maximal degree in co-relation 175004. Up to 80698 conditions per place. [2022-12-13 16:51:23,789 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 93 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2022-12-13 16:51:23,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 150 transitions, 797 flow [2022-12-13 16:51:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2022-12-13 16:51:23,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2022-12-13 16:51:23,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2022-12-13 16:51:23,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2022-12-13 16:51:23,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:23,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2022-12-13 16:51:23,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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) [2022-12-13 16:51:23,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:51:23,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:51:23,796 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 444 flow. Second operand 3 states and 651 transitions. [2022-12-13 16:51:23,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 150 transitions, 797 flow [2022-12-13 16:51:23,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 791 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:23,812 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 450 flow [2022-12-13 16:51:23,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2022-12-13 16:51:23,813 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2022-12-13 16:51:23,813 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 450 flow [2022-12-13 16:51:23,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2022-12-13 16:51:23,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:23,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:23,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:51:23,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:51:23,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash 381303187, now seen corresponding path program 1 times [2022-12-13 16:51:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:23,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081009858] [2022-12-13 16:51:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:23,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:23,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:23,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081009858] [2022-12-13 16:51:23,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081009858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:23,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:23,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:23,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204308460] [2022-12-13 16:51:23,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:51:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:51:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:51:23,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 413 [2022-12-13 16:51:23,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2022-12-13 16:51:23,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:23,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 413 [2022-12-13 16:51:23,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:44,769 INFO L130 PetriNetUnfolder]: 226959/299462 cut-off events. [2022-12-13 16:51:44,770 INFO L131 PetriNetUnfolder]: For 192514/198088 co-relation queries the response was YES. [2022-12-13 16:51:45,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777179 conditions, 299462 events. 226959/299462 cut-off events. For 192514/198088 co-relation queries the response was YES. Maximal size of possible extension queue 16666. Compared 2287232 event pairs, 46647 based on Foata normal form. 228/250298 useless extension candidates. Maximal degree in co-relation 776991. Up to 115774 conditions per place. [2022-12-13 16:51:46,609 INFO L137 encePairwiseOnDemand]: 396/413 looper letters, 171 selfloop transitions, 36 changer transitions 0/235 dead transitions. [2022-12-13 16:51:46,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 1364 flow [2022-12-13 16:51:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:51:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:51:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1044 transitions. [2022-12-13 16:51:46,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5055690072639225 [2022-12-13 16:51:46,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1044 transitions. [2022-12-13 16:51:46,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1044 transitions. [2022-12-13 16:51:46,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:46,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1044 transitions. [2022-12-13 16:51:46,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.8) internal successors, (1044), 5 states have internal predecessors, (1044), 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) [2022-12-13 16:51:46,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 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) [2022-12-13 16:51:46,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 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) [2022-12-13 16:51:46,617 INFO L175 Difference]: Start difference. First operand has 90 places, 109 transitions, 450 flow. Second operand 5 states and 1044 transitions. [2022-12-13 16:51:46,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 1364 flow [2022-12-13 16:51:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 235 transitions, 1354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:46,649 INFO L231 Difference]: Finished difference. Result has 94 places, 127 transitions, 663 flow [2022-12-13 16:51:46,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=663, PETRI_PLACES=94, PETRI_TRANSITIONS=127} [2022-12-13 16:51:46,649 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2022-12-13 16:51:46,650 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 127 transitions, 663 flow [2022-12-13 16:51:46,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2022-12-13 16:51:46,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:46,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:46,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:51:46,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:51:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1064501508, now seen corresponding path program 1 times [2022-12-13 16:51:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:46,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235671320] [2022-12-13 16:51:46,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:46,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:51:46,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:46,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235671320] [2022-12-13 16:51:46,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235671320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:46,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:46,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316332785] [2022-12-13 16:51:46,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:51:46,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:51:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:51:46,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 413 [2022-12-13 16:51:46,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 127 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 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) [2022-12-13 16:51:46,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:46,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 413 [2022-12-13 16:51:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:18,660 INFO L130 PetriNetUnfolder]: 307965/408275 cut-off events. [2022-12-13 16:52:18,660 INFO L131 PetriNetUnfolder]: For 419591/435762 co-relation queries the response was YES. [2022-12-13 16:52:19,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141179 conditions, 408275 events. 307965/408275 cut-off events. For 419591/435762 co-relation queries the response was YES. Maximal size of possible extension queue 22186. Compared 3239075 event pairs, 53739 based on Foata normal form. 622/342869 useless extension candidates. Maximal degree in co-relation 1140985. Up to 171198 conditions per place. [2022-12-13 16:52:21,318 INFO L137 encePairwiseOnDemand]: 397/413 looper letters, 173 selfloop transitions, 54 changer transitions 0/256 dead transitions. [2022-12-13 16:52:21,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 256 transitions, 1708 flow [2022-12-13 16:52:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:52:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:52:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1055 transitions. [2022-12-13 16:52:21,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5108958837772397 [2022-12-13 16:52:21,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1055 transitions. [2022-12-13 16:52:21,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1055 transitions. [2022-12-13 16:52:21,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:21,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1055 transitions. [2022-12-13 16:52:21,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 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) [2022-12-13 16:52:21,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 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) [2022-12-13 16:52:21,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 413.0) internal successors, (2478), 6 states have internal predecessors, (2478), 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) [2022-12-13 16:52:21,325 INFO L175 Difference]: Start difference. First operand has 94 places, 127 transitions, 663 flow. Second operand 5 states and 1055 transitions. [2022-12-13 16:52:21,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 256 transitions, 1708 flow [2022-12-13 16:52:21,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 256 transitions, 1708 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:52:21,455 INFO L231 Difference]: Finished difference. Result has 100 places, 148 transitions, 1016 flow [2022-12-13 16:52:21,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1016, PETRI_PLACES=100, PETRI_TRANSITIONS=148} [2022-12-13 16:52:21,455 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 13 predicate places. [2022-12-13 16:52:21,455 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 148 transitions, 1016 flow [2022-12-13 16:52:21,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 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) [2022-12-13 16:52:21,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:21,456 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:52:21,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:52:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1312700143, now seen corresponding path program 1 times [2022-12-13 16:52:21,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:21,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506673663] [2022-12-13 16:52:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:21,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:52:21,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:21,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506673663] [2022-12-13 16:52:21,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506673663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:21,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:21,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:52:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101906844] [2022-12-13 16:52:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:52:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:52:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:52:21,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 413 [2022-12-13 16:52:21,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 148 transitions, 1016 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2022-12-13 16:52:21,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:21,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 413 [2022-12-13 16:52:21,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:49,714 INFO L130 PetriNetUnfolder]: 233338/335104 cut-off events. [2022-12-13 16:52:49,714 INFO L131 PetriNetUnfolder]: For 670385/880236 co-relation queries the response was YES. [2022-12-13 16:52:50,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923749 conditions, 335104 events. 233338/335104 cut-off events. For 670385/880236 co-relation queries the response was YES. Maximal size of possible extension queue 17563. Compared 3076038 event pairs, 98620 based on Foata normal form. 13146/289430 useless extension candidates. Maximal degree in co-relation 478793. Up to 181133 conditions per place. [2022-12-13 16:52:52,288 INFO L137 encePairwiseOnDemand]: 409/413 looper letters, 124 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2022-12-13 16:52:52,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 199 transitions, 1632 flow [2022-12-13 16:52:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:52:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:52:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-12-13 16:52:52,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5230024213075061 [2022-12-13 16:52:52,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-12-13 16:52:52,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-12-13 16:52:52,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:52,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-12-13 16:52:52,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 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) [2022-12-13 16:52:52,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:52:52,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2022-12-13 16:52:52,294 INFO L175 Difference]: Start difference. First operand has 100 places, 148 transitions, 1016 flow. Second operand 3 states and 648 transitions. [2022-12-13 16:52:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 199 transitions, 1632 flow [2022-12-13 16:52:52,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 199 transitions, 1632 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:52:52,430 INFO L231 Difference]: Finished difference. Result has 103 places, 148 transitions, 1026 flow [2022-12-13 16:52:52,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1026, PETRI_PLACES=103, PETRI_TRANSITIONS=148} [2022-12-13 16:52:52,430 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 16 predicate places. [2022-12-13 16:52:52,430 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 148 transitions, 1026 flow [2022-12-13 16:52:52,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2022-12-13 16:52:52,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:52,430 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:52:52,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:52:52,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash -323121501, now seen corresponding path program 1 times [2022-12-13 16:52:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:52,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010695778] [2022-12-13 16:52:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:52:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010695778] [2022-12-13 16:52:52,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010695778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:52,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:52,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:52:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657737159] [2022-12-13 16:52:52,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:52,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:52:52,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:52:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:52:52,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 413 [2022-12-13 16:52:52,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 148 transitions, 1026 flow. Second operand has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2022-12-13 16:52:52,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:52,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 413 [2022-12-13 16:52:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:53:38,297 INFO L130 PetriNetUnfolder]: 423955/561913 cut-off events. [2022-12-13 16:53:38,297 INFO L131 PetriNetUnfolder]: For 968227/977646 co-relation queries the response was YES. [2022-12-13 16:53:39,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667917 conditions, 561913 events. 423955/561913 cut-off events. For 968227/977646 co-relation queries the response was YES. Maximal size of possible extension queue 31805. Compared 4494162 event pairs, 81079 based on Foata normal form. 9236/502683 useless extension candidates. Maximal degree in co-relation 1422201. Up to 248812 conditions per place. [2022-12-13 16:53:42,298 INFO L137 encePairwiseOnDemand]: 392/413 looper letters, 274 selfloop transitions, 41 changer transitions 0/344 dead transitions. [2022-12-13 16:53:42,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 344 transitions, 2697 flow [2022-12-13 16:53:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:53:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:53:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1462 transitions. [2022-12-13 16:53:42,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5057073676928399 [2022-12-13 16:53:42,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1462 transitions. [2022-12-13 16:53:42,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1462 transitions. [2022-12-13 16:53:42,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:53:42,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1462 transitions. [2022-12-13 16:53:42,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.85714285714286) internal successors, (1462), 7 states have internal predecessors, (1462), 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) [2022-12-13 16:53:42,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 413.0) internal successors, (3304), 8 states have internal predecessors, (3304), 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) [2022-12-13 16:53:42,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 413.0) internal successors, (3304), 8 states have internal predecessors, (3304), 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) [2022-12-13 16:53:42,307 INFO L175 Difference]: Start difference. First operand has 103 places, 148 transitions, 1026 flow. Second operand 7 states and 1462 transitions. [2022-12-13 16:53:42,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 344 transitions, 2697 flow [2022-12-13 16:53:42,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 344 transitions, 2683 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:53:42,660 INFO L231 Difference]: Finished difference. Result has 112 places, 176 transitions, 1470 flow [2022-12-13 16:53:42,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1470, PETRI_PLACES=112, PETRI_TRANSITIONS=176} [2022-12-13 16:53:42,660 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 25 predicate places. [2022-12-13 16:53:42,660 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 176 transitions, 1470 flow [2022-12-13 16:53:42,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2022-12-13 16:53:42,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:53:42,661 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:53:42,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:53:42,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:53:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:53:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash 647777914, now seen corresponding path program 1 times [2022-12-13 16:53:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:53:42,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985883970] [2022-12-13 16:53:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:53:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:53:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:53:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:53:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:53:42,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985883970] [2022-12-13 16:53:42,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985883970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:53:42,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:53:42,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:53:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380283242] [2022-12-13 16:53:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:53:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:53:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:53:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:53:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:53:42,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 413 [2022-12-13 16:53:42,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 176 transitions, 1470 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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) [2022-12-13 16:53:42,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:53:42,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 413 [2022-12-13 16:53:42,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:54:55,661 INFO L130 PetriNetUnfolder]: 580859/767364 cut-off events. [2022-12-13 16:54:55,661 INFO L131 PetriNetUnfolder]: For 1884152/1902138 co-relation queries the response was YES. [2022-12-13 16:54:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404888 conditions, 767364 events. 580859/767364 cut-off events. For 1884152/1902138 co-relation queries the response was YES. Maximal size of possible extension queue 40352. Compared 6236740 event pairs, 122153 based on Foata normal form. 10680/672037 useless extension candidates. Maximal degree in co-relation 2045400. Up to 329090 conditions per place. [2022-12-13 16:55:01,490 INFO L137 encePairwiseOnDemand]: 392/413 looper letters, 299 selfloop transitions, 80 changer transitions 0/411 dead transitions. [2022-12-13 16:55:01,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 411 transitions, 3829 flow [2022-12-13 16:55:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:55:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:55:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1464 transitions. [2022-12-13 16:55:01,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063991698374265 [2022-12-13 16:55:01,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1464 transitions. [2022-12-13 16:55:01,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1464 transitions. [2022-12-13 16:55:01,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:55:01,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1464 transitions. [2022-12-13 16:55:01,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.14285714285714) internal successors, (1464), 7 states have internal predecessors, (1464), 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) [2022-12-13 16:55:01,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 413.0) internal successors, (3304), 8 states have internal predecessors, (3304), 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) [2022-12-13 16:55:01,499 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 413.0) internal successors, (3304), 8 states have internal predecessors, (3304), 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) [2022-12-13 16:55:01,499 INFO L175 Difference]: Start difference. First operand has 112 places, 176 transitions, 1470 flow. Second operand 7 states and 1464 transitions. [2022-12-13 16:55:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 411 transitions, 3829 flow [2022-12-13 16:58:38,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 411 transitions, 3823 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 16:58:38,386 INFO L231 Difference]: Finished difference. Result has 122 places, 229 transitions, 2391 flow [2022-12-13 16:58:38,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2391, PETRI_PLACES=122, PETRI_TRANSITIONS=229} [2022-12-13 16:58:38,386 INFO L288 CegarLoopForPetriNet]: 87 programPoint places, 35 predicate places. [2022-12-13 16:58:38,386 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 229 transitions, 2391 flow [2022-12-13 16:58:38,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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) [2022-12-13 16:58:38,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:58:38,386 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:58:38,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:58:38,387 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-12-13 16:58:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:58:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash 928477642, now seen corresponding path program 1 times [2022-12-13 16:58:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:58:38,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146337497] [2022-12-13 16:58:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:38,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:58:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:58:38,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:58:38,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146337497] [2022-12-13 16:58:38,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146337497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:58:38,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:58:38,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:58:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618406642] [2022-12-13 16:58:38,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:58:38,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:58:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:58:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:58:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:58:38,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 413 [2022-12-13 16:58:38,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 229 transitions, 2391 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2022-12-13 16:58:38,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:58:38,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 413 [2022-12-13 16:58:38,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand