./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/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_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/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_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:18:48,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:18:48,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:18:48,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:18:48,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:18:48,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:18:48,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:18:48,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:18:48,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:18:48,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:18:48,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:18:48,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:18:48,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:18:48,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:18:48,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:18:48,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:18:48,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:18:48,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:18:48,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:18:48,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:18:48,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:18:48,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:18:48,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:18:48,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:18:48,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:18:48,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:18:48,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:18:48,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:18:48,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:18:48,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:18:48,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:18:48,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:18:48,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:18:48,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:18:48,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:18:48,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:18:48,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:18:48,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:18:48,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:18:48,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:18:48,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:18:48,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:18:48,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:18:48,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:18:48,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:18:48,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:18:48,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:18:48,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:18:48,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:18:48,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:18:48,645 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:18:48,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:18:48,646 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:18:48,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:18:48,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:18:48,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:18:48,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:18:48,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:18:48,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:18:48,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:18:48,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:18:48,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:18:48,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:18:48,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:18:48,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:18:48,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:18:48,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:18:48,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:18:48,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:18:48,649 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:18:48,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:18:48,650 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:18:48,650 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_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2022-12-13 12:18:48,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:18:48,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:18:48,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:18:48,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:18:48,857 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:18:48,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-1.i [2022-12-13 12:18:51,468 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:18:51,707 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:18:51,707 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/sv-benchmarks/c/pthread/triangular-1.i [2022-12-13 12:18:51,719 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/data/d1fa56541/7aaac70d6980492c9ca2a40f9812d009/FLAG427d8d29a [2022-12-13 12:18:51,730 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/data/d1fa56541/7aaac70d6980492c9ca2a40f9812d009 [2022-12-13 12:18:51,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:18:51,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:18:51,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:18:51,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:18:51,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:18:51,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:18:51" (1/1) ... [2022-12-13 12:18:51,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc27f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:51, skipping insertion in model container [2022-12-13 12:18:51,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:18:51" (1/1) ... [2022-12-13 12:18:51,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:18:51,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:18:52,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,035 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_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2022-12-13 12:18:52,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:18:52,043 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:18:52,073 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,073 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:18:52,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:18:52,080 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_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2022-12-13 12:18:52,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:18:52,104 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:18:52,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52 WrapperNode [2022-12-13 12:18:52,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:18:52,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:18:52,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:18:52,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:18:52,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,138 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-13 12:18:52,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:18:52,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:18:52,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:18:52,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:18:52,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:18:52,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:18:52,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:18:52,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:18:52,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (1/1) ... [2022-12-13 12:18:52,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:18:52,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:52,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:18:52,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:18:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 12:18:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 12:18:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 12:18:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 12:18:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:18:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:18:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:18:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:18:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:18:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:18:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:18:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:18:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:18:52,214 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 12:18:52,308 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:18:52,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:18:52,463 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:18:52,490 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:18:52,490 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:18:52,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:18:52 BoogieIcfgContainer [2022-12-13 12:18:52,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:18:52,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:18:52,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:18:52,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:18:52,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:18:51" (1/3) ... [2022-12-13 12:18:52,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1619b038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:18:52, skipping insertion in model container [2022-12-13 12:18:52,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:18:52" (2/3) ... [2022-12-13 12:18:52,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1619b038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:18:52, skipping insertion in model container [2022-12-13 12:18:52,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:18:52" (3/3) ... [2022-12-13 12:18:52,501 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2022-12-13 12:18:52,510 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:18:52,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:18:52,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 12:18:52,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:18:52,569 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:18:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-12-13 12:18:52,625 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-12-13 12:18:52,625 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:18:52,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-12-13 12:18:52,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-12-13 12:18:52,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-12-13 12:18:52,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:18:52,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 164 flow [2022-12-13 12:18:52,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 164 flow [2022-12-13 12:18:52,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 164 flow [2022-12-13 12:18:52,665 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-12-13 12:18:52,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:18:52,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-12-13 12:18:52,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 1870 [2022-12-13 12:18:54,430 INFO L134 LiptonReduction]: Checked pairs total: 1902 [2022-12-13 12:18:54,430 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-12-13 12:18:54,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:18:54,449 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;@3a45c66a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:18:54,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 12:18:54,451 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 12:18:54,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:18:54,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:54,452 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:18:54,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 10267181, now seen corresponding path program 1 times [2022-12-13 12:18:54,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:54,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591055508] [2022-12-13 12:18:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:54,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:54,664 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 12:18:54,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:54,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591055508] [2022-12-13 12:18:54,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591055508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:54,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:54,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:18:54,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587718387] [2022-12-13 12:18:54,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:18:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:18:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:18:54,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 12:18:54,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 12:18:54,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:54,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 12:18:54,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:54,793 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2022-12-13 12:18:54,793 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:18:54,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1859 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2022-12-13 12:18:54,796 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-12-13 12:18:54,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2022-12-13 12:18:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:18:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:18:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2022-12-13 12:18:54,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5180467091295117 [2022-12-13 12:18:54,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2022-12-13 12:18:54,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2022-12-13 12:18:54,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:54,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2022-12-13 12:18:54,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 12:18:54,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:54,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:54,816 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 244 transitions. [2022-12-13 12:18:54,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2022-12-13 12:18:54,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:18:54,820 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2022-12-13 12:18:54,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2022-12-13 12:18:54,823 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2022-12-13 12:18:54,824 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2022-12-13 12:18:54,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 12:18:54,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:54,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:18:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:18:54,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash 10267182, now seen corresponding path program 1 times [2022-12-13 12:18:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851942070] [2022-12-13 12:18:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:54,866 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 12:18:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:54,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851942070] [2022-12-13 12:18:54,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851942070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:54,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:54,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:18:54,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911209806] [2022-12-13 12:18:54,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:54,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:18:54,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:18:54,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:18:54,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 12:18:54,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 12:18:54,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:54,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 12:18:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:54,944 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2022-12-13 12:18:54,944 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-12-13 12:18:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1909 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2022-12-13 12:18:54,946 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2022-12-13 12:18:54,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2022-12-13 12:18:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:18:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:18:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 12:18:54,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-12-13 12:18:54,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 12:18:54,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 12:18:54,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:54,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 12:18:54,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 12:18:54,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:54,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:54,951 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 237 transitions. [2022-12-13 12:18:54,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2022-12-13 12:18:54,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:18:54,952 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2022-12-13 12:18:54,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2022-12-13 12:18:54,953 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2022-12-13 12:18:54,953 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2022-12-13 12:18:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 12:18:54,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:54,953 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:18:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:18:54,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 10267217, now seen corresponding path program 1 times [2022-12-13 12:18:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:54,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812697236] [2022-12-13 12:18:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:54,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:55,001 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 12:18:55,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812697236] [2022-12-13 12:18:55,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812697236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:55,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:55,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:18:55,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634591901] [2022-12-13 12:18:55,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:18:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:18:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:18:55,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-12-13 12:18:55,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:18:55,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:55,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-12-13 12:18:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:55,100 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2022-12-13 12:18:55,100 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-12-13 12:18:55,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3190 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2022-12-13 12:18:55,103 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-12-13 12:18:55,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2022-12-13 12:18:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:18:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:18:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 12:18:55,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-12-13 12:18:55,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 12:18:55,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 12:18:55,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:55,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 12:18:55,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 12:18:55,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:55,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:55,107 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 237 transitions. [2022-12-13 12:18:55,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2022-12-13 12:18:55,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:18:55,109 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2022-12-13 12:18:55,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2022-12-13 12:18:55,109 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2022-12-13 12:18:55,109 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2022-12-13 12:18:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:18:55,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:55,110 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:18:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:18:55,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash 318284178, now seen corresponding path program 1 times [2022-12-13 12:18:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:55,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089447812] [2022-12-13 12:18:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:55,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:55,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089447812] [2022-12-13 12:18:55,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089447812] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:55,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484265669] [2022-12-13 12:18:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:55,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:55,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:55,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:18:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:55,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:18:55,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:55,247 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 12:18:55,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:18:55,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484265669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:55,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:18:55,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 12:18:55,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157406367] [2022-12-13 12:18:55,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:55,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:18:55,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:55,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:18:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:18:55,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-12-13 12:18:55,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 12:18:55,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:55,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-12-13 12:18:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:55,361 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2022-12-13 12:18:55,361 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2022-12-13 12:18:55,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2877 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 336 conditions per place. [2022-12-13 12:18:55,364 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 12:18:55,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2022-12-13 12:18:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:18:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:18:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2022-12-13 12:18:55,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4984076433121019 [2022-12-13 12:18:55,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2022-12-13 12:18:55,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2022-12-13 12:18:55,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:55,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2022-12-13 12:18:55,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 12:18:55,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 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 12:18:55,368 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 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 12:18:55,368 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 313 transitions. [2022-12-13 12:18:55,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2022-12-13 12:18:55,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:18:55,370 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2022-12-13 12:18:55,370 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-12-13 12:18:55,370 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2022-12-13 12:18:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2022-12-13 12:18:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 12:18:55,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:55,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:55,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:18:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:55,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 945663873, now seen corresponding path program 1 times [2022-12-13 12:18:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:55,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533165463] [2022-12-13 12:18:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:55,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:55,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533165463] [2022-12-13 12:18:55,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533165463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:55,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875927171] [2022-12-13 12:18:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:55,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:55,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:55,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:55,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:18:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:18:55,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:55,676 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 12:18:55,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:18:55,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875927171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:55,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:18:55,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 12:18:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081220577] [2022-12-13 12:18:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:18:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:18:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:18:55,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-12-13 12:18:55,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 12:18:55,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:55,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-12-13 12:18:55,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:55,759 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2022-12-13 12:18:55,759 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-12-13 12:18:55,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 514 events. 301/514 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2186 event pairs, 48 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1374. Up to 380 conditions per place. [2022-12-13 12:18:55,761 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2022-12-13 12:18:55,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2022-12-13 12:18:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:18:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:18:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2022-12-13 12:18:55,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4840764331210191 [2022-12-13 12:18:55,763 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2022-12-13 12:18:55,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2022-12-13 12:18:55,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:55,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2022-12-13 12:18:55,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 12:18:55,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 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 12:18:55,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 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 12:18:55,766 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 304 transitions. [2022-12-13 12:18:55,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2022-12-13 12:18:55,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:18:55,768 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2022-12-13 12:18:55,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2022-12-13 12:18:55,769 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-13 12:18:55,770 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2022-12-13 12:18:55,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 12:18:55,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:55,770 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:18:55,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:18:55,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:55,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1277431228, now seen corresponding path program 1 times [2022-12-13 12:18:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:55,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912399237] [2022-12-13 12:18:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:55,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,028 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 12:18:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912399237] [2022-12-13 12:18:56,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912399237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:56,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:56,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:18:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772248794] [2022-12-13 12:18:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:18:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:18:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:18:56,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 12:18:56,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:18:56,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 12:18:56,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:56,116 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2022-12-13 12:18:56,116 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-12-13 12:18:56,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 454 events. 259/454 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1975 event pairs, 103 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 1276. Up to 239 conditions per place. [2022-12-13 12:18:56,121 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2022-12-13 12:18:56,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2022-12-13 12:18:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:18:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:18:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2022-12-13 12:18:56,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5010615711252654 [2022-12-13 12:18:56,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2022-12-13 12:18:56,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2022-12-13 12:18:56,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:56,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2022-12-13 12:18:56,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 12:18:56,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:56,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:56,125 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 236 transitions. [2022-12-13 12:18:56,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2022-12-13 12:18:56,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:18:56,127 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2022-12-13 12:18:56,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2022-12-13 12:18:56,128 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-12-13 12:18:56,128 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2022-12-13 12:18:56,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:18:56,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:56,129 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:18:56,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:18:56,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1277431229, now seen corresponding path program 1 times [2022-12-13 12:18:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:56,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394764666] [2022-12-13 12:18:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,159 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 12:18:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394764666] [2022-12-13 12:18:56,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394764666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:56,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:56,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:18:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304849979] [2022-12-13 12:18:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:18:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:18:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:18:56,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 12:18:56,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:18:56,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 12:18:56,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:56,224 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2022-12-13 12:18:56,224 INFO L131 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2022-12-13 12:18:56,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 426 events. 237/426 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1885 event pairs, 75 based on Foata normal form. 24/450 useless extension candidates. Maximal degree in co-relation 1358. Up to 263 conditions per place. [2022-12-13 12:18:56,227 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2022-12-13 12:18:56,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2022-12-13 12:18:56,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:18:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:18:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2022-12-13 12:18:56,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4989384288747346 [2022-12-13 12:18:56,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2022-12-13 12:18:56,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2022-12-13 12:18:56,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:56,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2022-12-13 12:18:56,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:18:56,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:56,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:56,232 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 235 transitions. [2022-12-13 12:18:56,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2022-12-13 12:18:56,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:18:56,234 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2022-12-13 12:18:56,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2022-12-13 12:18:56,235 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2022-12-13 12:18:56,235 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2022-12-13 12:18:56,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 12:18:56,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:56,235 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:56,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:18:56,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash -716667321, now seen corresponding path program 1 times [2022-12-13 12:18:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:56,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191562184] [2022-12-13 12:18:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,276 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 12:18:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191562184] [2022-12-13 12:18:56,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191562184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:56,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:56,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:18:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141251844] [2022-12-13 12:18:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:18:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:18:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:18:56,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:56,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:56,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:56,384 INFO L130 PetriNetUnfolder]: 281/500 cut-off events. [2022-12-13 12:18:56,384 INFO L131 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2022-12-13 12:18:56,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 500 events. 281/500 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2209 event pairs, 61 based on Foata normal form. 30/530 useless extension candidates. Maximal degree in co-relation 1618. Up to 216 conditions per place. [2022-12-13 12:18:56,387 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 39 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2022-12-13 12:18:56,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 334 flow [2022-12-13 12:18:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:18:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:18:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2022-12-13 12:18:56,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48152866242038217 [2022-12-13 12:18:56,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2022-12-13 12:18:56,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2022-12-13 12:18:56,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:56,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2022-12-13 12:18:56,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 12:18:56,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 12:18:56,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 12:18:56,393 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 378 transitions. [2022-12-13 12:18:56,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 334 flow [2022-12-13 12:18:56,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:18:56,396 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 210 flow [2022-12-13 12:18:56,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2022-12-13 12:18:56,396 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2022-12-13 12:18:56,397 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 210 flow [2022-12-13 12:18:56,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:56,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:56,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:18:56,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:56,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:56,398 INFO L85 PathProgramCache]: Analyzing trace with hash -716667320, now seen corresponding path program 1 times [2022-12-13 12:18:56,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:56,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890414882] [2022-12-13 12:18:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,434 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 12:18:56,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890414882] [2022-12-13 12:18:56,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890414882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:56,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:56,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:18:56,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911660165] [2022-12-13 12:18:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:18:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:18:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:18:56,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:56,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:56,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:56,536 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2022-12-13 12:18:56,536 INFO L131 PetriNetUnfolder]: For 815/815 co-relation queries the response was YES. [2022-12-13 12:18:56,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 532 events. 301/532 cut-off events. For 815/815 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2334 event pairs, 47 based on Foata normal form. 18/550 useless extension candidates. Maximal degree in co-relation 1891. Up to 251 conditions per place. [2022-12-13 12:18:56,540 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 40 selfloop transitions, 12 changer transitions 1/53 dead transitions. [2022-12-13 12:18:56,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 433 flow [2022-12-13 12:18:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:18:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:18:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2022-12-13 12:18:56,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764331210191083 [2022-12-13 12:18:56,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2022-12-13 12:18:56,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2022-12-13 12:18:56,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:56,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2022-12-13 12:18:56,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 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 12:18:56,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 12:18:56,546 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 12:18:56,546 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 210 flow. Second operand 5 states and 374 transitions. [2022-12-13 12:18:56,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 433 flow [2022-12-13 12:18:56,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 429 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 12:18:56,550 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 280 flow [2022-12-13 12:18:56,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2022-12-13 12:18:56,551 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 21 predicate places. [2022-12-13 12:18:56,551 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 280 flow [2022-12-13 12:18:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:56,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:56,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:18:56,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -716667564, now seen corresponding path program 1 times [2022-12-13 12:18:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:56,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346684558] [2022-12-13 12:18:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,588 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 12:18:56,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346684558] [2022-12-13 12:18:56,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346684558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:56,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:56,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:18:56,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233796566] [2022-12-13 12:18:56,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:18:56,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:18:56,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:18:56,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:56,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:56,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:56,657 INFO L130 PetriNetUnfolder]: 232/400 cut-off events. [2022-12-13 12:18:56,657 INFO L131 PetriNetUnfolder]: For 1018/1018 co-relation queries the response was YES. [2022-12-13 12:18:56,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 400 events. 232/400 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1507 event pairs, 161 based on Foata normal form. 30/430 useless extension candidates. Maximal degree in co-relation 1503. Up to 400 conditions per place. [2022-12-13 12:18:56,660 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 12:18:56,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 27 transitions, 261 flow [2022-12-13 12:18:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:18:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:18:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-12-13 12:18:56,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4607218683651805 [2022-12-13 12:18:56,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-12-13 12:18:56,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-12-13 12:18:56,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:56,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-12-13 12:18:56,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 12:18:56,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:56,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 12:18:56,664 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 280 flow. Second operand 3 states and 217 transitions. [2022-12-13 12:18:56,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 27 transitions, 261 flow [2022-12-13 12:18:56,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 237 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-13 12:18:56,667 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 185 flow [2022-12-13 12:18:56,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-12-13 12:18:56,668 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 14 predicate places. [2022-12-13 12:18:56,668 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 185 flow [2022-12-13 12:18:56,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:56,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:56,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:18:56,669 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash -716667563, now seen corresponding path program 1 times [2022-12-13 12:18:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:56,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931584860] [2022-12-13 12:18:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,708 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 12:18:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931584860] [2022-12-13 12:18:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931584860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:56,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:56,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:18:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165931842] [2022-12-13 12:18:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:18:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:18:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:18:56,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:56,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:56,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:56,793 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2022-12-13 12:18:56,794 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2022-12-13 12:18:56,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 432 events. 252/432 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1653 event pairs, 47 based on Foata normal form. 18/450 useless extension candidates. Maximal degree in co-relation 1519. Up to 315 conditions per place. [2022-12-13 12:18:56,795 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 38 selfloop transitions, 5 changer transitions 2/45 dead transitions. [2022-12-13 12:18:56,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 345 flow [2022-12-13 12:18:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:18:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:18:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2022-12-13 12:18:56,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726114649681529 [2022-12-13 12:18:56,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2022-12-13 12:18:56,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2022-12-13 12:18:56,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:56,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2022-12-13 12:18:56,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 12:18:56,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 12:18:56,801 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 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 12:18:56,801 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 185 flow. Second operand 5 states and 371 transitions. [2022-12-13 12:18:56,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 345 flow [2022-12-13 12:18:56,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 340 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 12:18:56,804 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 206 flow [2022-12-13 12:18:56,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2022-12-13 12:18:56,805 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2022-12-13 12:18:56,805 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 206 flow [2022-12-13 12:18:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:56,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:56,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:18:56,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash -741849032, now seen corresponding path program 1 times [2022-12-13 12:18:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:56,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205627064] [2022-12-13 12:18:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:56,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205627064] [2022-12-13 12:18:56,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205627064] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507498044] [2022-12-13 12:18:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:56,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:56,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:18:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:56,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:18:56,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:56,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:18:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:56,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507498044] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:18:56,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:18:56,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 12:18:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138181798] [2022-12-13 12:18:56,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:18:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:18:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:18:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:18:56,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:56,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 12:18:56,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:56,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:56,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:57,084 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2022-12-13 12:18:57,084 INFO L131 PetriNetUnfolder]: For 1525/1525 co-relation queries the response was YES. [2022-12-13 12:18:57,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 622 events. 361/622 cut-off events. For 1525/1525 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2516 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2281. Up to 203 conditions per place. [2022-12-13 12:18:57,086 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2022-12-13 12:18:57,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 608 flow [2022-12-13 12:18:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:18:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:18:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 666 transitions. [2022-12-13 12:18:57,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4713375796178344 [2022-12-13 12:18:57,088 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 666 transitions. [2022-12-13 12:18:57,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 666 transitions. [2022-12-13 12:18:57,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:57,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 666 transitions. [2022-12-13 12:18:57,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 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 12:18:57,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 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 12:18:57,092 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 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 12:18:57,092 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 206 flow. Second operand 9 states and 666 transitions. [2022-12-13 12:18:57,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 608 flow [2022-12-13 12:18:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 599 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 12:18:57,096 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 461 flow [2022-12-13 12:18:57,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=461, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2022-12-13 12:18:57,097 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 33 predicate places. [2022-12-13 12:18:57,097 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 461 flow [2022-12-13 12:18:57,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 12:18:57,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:57,098 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:57,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:18:57,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:57,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:57,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash 40541883, now seen corresponding path program 1 times [2022-12-13 12:18:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759191967] [2022-12-13 12:18:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759191967] [2022-12-13 12:18:57,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759191967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317260444] [2022-12-13 12:18:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:57,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:57,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:57,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:18:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:57,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:18:57,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:57,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:18:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:57,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317260444] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:18:57,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:18:57,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:18:57,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619728235] [2022-12-13 12:18:57,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:18:57,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:18:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:57,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:18:57,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:18:57,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:57,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 461 flow. Second operand has 12 states, 12 states have (on average 68.83333333333333) internal successors, (826), 12 states have internal predecessors, (826), 0 states have call successors, (0), 0 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 12:18:57,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:57,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:57,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:57,710 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2022-12-13 12:18:57,710 INFO L131 PetriNetUnfolder]: For 4628/4628 co-relation queries the response was YES. [2022-12-13 12:18:57,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 826 events. 481/826 cut-off events. For 4628/4628 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3329 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3802. Up to 299 conditions per place. [2022-12-13 12:18:57,714 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2022-12-13 12:18:57,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 1171 flow [2022-12-13 12:18:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:18:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 12:18:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1031 transitions. [2022-12-13 12:18:57,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46906278434940857 [2022-12-13 12:18:57,716 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1031 transitions. [2022-12-13 12:18:57,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1031 transitions. [2022-12-13 12:18:57,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:57,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1031 transitions. [2022-12-13 12:18:57,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.64285714285714) internal successors, (1031), 14 states have internal predecessors, (1031), 0 states have call successors, (0), 0 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 12:18:57,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 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 12:18:57,720 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 0 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 12:18:57,720 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 461 flow. Second operand 14 states and 1031 transitions. [2022-12-13 12:18:57,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 1171 flow [2022-12-13 12:18:57,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1076 flow, removed 44 selfloop flow, removed 2 redundant places. [2022-12-13 12:18:57,728 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 743 flow [2022-12-13 12:18:57,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=743, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2022-12-13 12:18:57,728 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2022-12-13 12:18:57,729 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 743 flow [2022-12-13 12:18:57,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.83333333333333) internal successors, (826), 12 states have internal predecessors, (826), 0 states have call successors, (0), 0 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 12:18:57,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:57,729 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:57,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:18:57,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:57,930 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1405692024, now seen corresponding path program 2 times [2022-12-13 12:18:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:57,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401808028] [2022-12-13 12:18:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:58,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:58,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401808028] [2022-12-13 12:18:58,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401808028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:58,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813228728] [2022-12-13 12:18:58,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:18:58,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:58,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:58,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:58,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:18:58,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:18:58,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:18:58,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:18:58,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:58,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:18:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:58,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813228728] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:18:58,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:18:58,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 12:18:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468305636] [2022-12-13 12:18:58,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:18:58,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:18:58,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:58,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:18:58,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:18:58,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:58,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 743 flow. Second operand has 16 states, 16 states have (on average 68.625) internal successors, (1098), 16 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 12:18:58,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:58,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:58,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:58,620 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2022-12-13 12:18:58,620 INFO L131 PetriNetUnfolder]: For 9859/9859 co-relation queries the response was YES. [2022-12-13 12:18:58,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 1306 events. 761/1306 cut-off events. For 9859/9859 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5628 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6408. Up to 499 conditions per place. [2022-12-13 12:18:58,630 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2022-12-13 12:18:58,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1963 flow [2022-12-13 12:18:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:18:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:18:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1391 transitions. [2022-12-13 12:18:58,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4663090848139457 [2022-12-13 12:18:58,634 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1391 transitions. [2022-12-13 12:18:58,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1391 transitions. [2022-12-13 12:18:58,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:58,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1391 transitions. [2022-12-13 12:18:58,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 73.21052631578948) internal successors, (1391), 19 states have internal predecessors, (1391), 0 states have call successors, (0), 0 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 12:18:58,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 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 12:18:58,643 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 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 12:18:58,643 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 743 flow. Second operand 19 states and 1391 transitions. [2022-12-13 12:18:58,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1963 flow [2022-12-13 12:18:58,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1904 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-12-13 12:18:58,670 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1415 flow [2022-12-13 12:18:58,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1415, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2022-12-13 12:18:58,671 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2022-12-13 12:18:58,671 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1415 flow [2022-12-13 12:18:58,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 68.625) internal successors, (1098), 16 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 12:18:58,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:18:58,672 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:58,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:18:58,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 12:18:58,873 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 12:18:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1302187749, now seen corresponding path program 2 times [2022-12-13 12:18:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:58,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995686266] [2022-12-13 12:18:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:58,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:59,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:59,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995686266] [2022-12-13 12:18:59,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995686266] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618897321] [2022-12-13 12:18:59,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:18:59,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:59,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:59,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:59,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:18:59,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:18:59,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:18:59,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:18:59,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:18:59,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:18:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618897321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:59,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:18:59,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 21 [2022-12-13 12:18:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977263556] [2022-12-13 12:18:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:59,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:18:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:59,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:18:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:18:59,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 12:18:59,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1415 flow. Second operand has 9 states, 9 states have (on average 69.11111111111111) internal successors, (622), 9 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 12:18:59,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:18:59,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 12:18:59,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:59,561 INFO L130 PetriNetUnfolder]: 1203/1914 cut-off events. [2022-12-13 12:18:59,561 INFO L131 PetriNetUnfolder]: For 11233/11233 co-relation queries the response was YES. [2022-12-13 12:18:59,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 1914 events. 1203/1914 cut-off events. For 11233/11233 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9082 event pairs, 66 based on Foata normal form. 174/2088 useless extension candidates. Maximal degree in co-relation 9419. Up to 1156 conditions per place. [2022-12-13 12:18:59,570 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 0 selfloop transitions, 0 changer transitions 220/220 dead transitions. [2022-12-13 12:18:59,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 220 transitions, 3079 flow [2022-12-13 12:18:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:18:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:18:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 587 transitions. [2022-12-13 12:18:59,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46735668789808915 [2022-12-13 12:18:59,571 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 587 transitions. [2022-12-13 12:18:59,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 587 transitions. [2022-12-13 12:18:59,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:59,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 587 transitions. [2022-12-13 12:18:59,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.375) internal successors, (587), 8 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 12:18:59,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 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 12:18:59,574 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 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 12:18:59,574 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1415 flow. Second operand 8 states and 587 transitions. [2022-12-13 12:18:59,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 220 transitions, 3079 flow [2022-12-13 12:18:59,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 220 transitions, 2512 flow, removed 68 selfloop flow, removed 29 redundant places. [2022-12-13 12:18:59,609 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2022-12-13 12:18:59,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2022-12-13 12:18:59,610 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 50 predicate places. [2022-12-13 12:18:59,610 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2022-12-13 12:18:59,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.11111111111111) internal successors, (622), 9 states have internal predecessors, (622), 0 states have call successors, (0), 0 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 12:18:59,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 12:18:59,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-12-13 12:18:59,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 12:18:59,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 12:18:59,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 12:18:59,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 12:18:59,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 12:18:59,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 12:18:59,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:18:59,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 12:18:59,815 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:59,821 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:18:59,821 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:18:59,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:18:59 BasicIcfg [2022-12-13 12:18:59,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:18:59,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:18:59,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:18:59,824 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:18:59,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:18:52" (3/4) ... [2022-12-13 12:18:59,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 12:18:59,838 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-12-13 12:18:59,839 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-12-13 12:18:59,845 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 12:18:59,846 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 12:18:59,846 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 12:18:59,847 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 12:18:59,915 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:18:59,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:18:59,917 INFO L158 Benchmark]: Toolchain (without parser) took 8182.09ms. Allocated memory was 134.2MB in the beginning and 199.2MB in the end (delta: 65.0MB). Free memory was 99.2MB in the beginning and 163.2MB in the end (delta: -64.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-12-13 12:18:59,917 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:18:59,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.74ms. Allocated memory is still 134.2MB. Free memory was 98.8MB in the beginning and 78.7MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 12:18:59,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.61ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 77.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:18:59,919 INFO L158 Benchmark]: Boogie Preprocessor took 21.72ms. Allocated memory is still 134.2MB. Free memory was 77.0MB in the beginning and 75.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:18:59,919 INFO L158 Benchmark]: RCFGBuilder took 331.18ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 75.4MB in the beginning and 134.3MB in the end (delta: -58.9MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2022-12-13 12:18:59,920 INFO L158 Benchmark]: TraceAbstraction took 7329.03ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 134.3MB in the beginning and 165.9MB in the end (delta: -31.6MB). Peak memory consumption was 128.4MB. Max. memory is 16.1GB. [2022-12-13 12:18:59,921 INFO L158 Benchmark]: Witness Printer took 91.32ms. Allocated memory is still 199.2MB. Free memory was 165.9MB in the beginning and 163.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:18:59,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.74ms. Allocated memory is still 134.2MB. Free memory was 98.8MB in the beginning and 78.7MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.61ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 77.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.72ms. Allocated memory is still 134.2MB. Free memory was 77.0MB in the beginning and 75.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 331.18ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 75.4MB in the beginning and 134.3MB in the end (delta: -58.9MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7329.03ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 134.3MB in the beginning and 165.9MB in the end (delta: -31.6MB). Peak memory consumption was 128.4MB. Max. memory is 16.1GB. * Witness Printer took 91.32ms. Allocated memory is still 199.2MB. Free memory was 165.9MB in the beginning and 163.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 81 PlacesBefore, 25 PlacesAfterwards, 79 TransitionsBefore, 21 TransitionsAfterwards, 1870 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 1902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1609, independent: 1587, independent conditional: 0, independent unconditional: 1587, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1040, independent: 1027, independent conditional: 0, independent unconditional: 1027, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1609, independent: 560, independent conditional: 0, independent unconditional: 560, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1040, unknown conditional: 0, unknown unconditional: 1040] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.2s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 881 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 788 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1048 IncrementalHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 33 mSDtfsCounter, 1048 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1415occurred in iteration=14, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 12 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 38/118 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 12:18:59,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fda11ef4-a328-4406-8cdc-6c6a3295c8f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE