./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-5.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_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/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_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/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_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/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 e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- 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 17:13:26,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:13:26,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:13:26,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:13:26,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:13:26,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:13:26,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:13:26,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:13:26,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:13:26,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:13:26,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:13:26,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:13:26,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:13:26,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:13:26,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:13:26,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:13:26,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:13:26,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:13:26,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:13:26,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:13:26,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:13:26,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:13:26,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:13:26,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:13:26,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:13:26,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:13:26,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:13:26,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:13:26,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:13:26,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:13:26,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:13:26,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:13:26,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:13:26,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:13:26,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:13:26,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:13:26,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:13:26,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:13:26,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:13:26,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:13:26,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:13:26,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:13:26,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:13:26,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:13:26,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:13:26,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:13:26,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:13:26,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:13:26,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:13:26,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:13:26,632 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:13:26,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:13:26,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:13:26,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:13:26,634 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:13:26,634 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:13:26,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:13:26,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:13:26,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:13:26,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:13:26,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:13:26,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:13:26,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:13:26,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:13:26,636 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:13:26,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:13:26,637 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:13:26,637 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_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2022-12-13 17:13:26,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:13:26,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:13:26,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:13:26,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:13:26,851 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:13:26,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/fib_unsafe-5.i [2022-12-13 17:13:29,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:13:29,585 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:13:29,586 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/sv-benchmarks/c/pthread/fib_unsafe-5.i [2022-12-13 17:13:29,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/data/5ca702525/21056630daa3437595297a77da560501/FLAGfdff4f8ec [2022-12-13 17:13:29,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/data/5ca702525/21056630daa3437595297a77da560501 [2022-12-13 17:13:29,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:13:29,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:13:29,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:13:29,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:13:29,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:13:29,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf6e80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29, skipping insertion in model container [2022-12-13 17:13:29,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:13:29,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:13:29,832 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_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/sv-benchmarks/c/pthread/fib_unsafe-5.i[30243,30256] [2022-12-13 17:13:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,848 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,849 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:13:29,857 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:13:29,881 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_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/sv-benchmarks/c/pthread/fib_unsafe-5.i[30243,30256] [2022-12-13 17:13:29,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,887 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:13:29,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:13:29,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:13:29,909 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:13:29,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29 WrapperNode [2022-12-13 17:13:29,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:13:29,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:13:29,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:13:29,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:13:29,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,941 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-12-13 17:13:29,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:13:29,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:13:29,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:13:29,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:13:29,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,963 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:13:29,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:13:29,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:13:29,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:13:29,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (1/1) ... [2022-12-13 17:13:29,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:13:29,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:29,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:13:29,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 17:13:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 17:13:30,026 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:13:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:13:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:13:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:13:30,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:13:30,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:13:30,028 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 17:13:30,133 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:13:30,135 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:13:30,313 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:13:30,339 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:13:30,339 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:13:30,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:13:30 BoogieIcfgContainer [2022-12-13 17:13:30,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:13:30,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:13:30,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:13:30,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:13:30,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:13:29" (1/3) ... [2022-12-13 17:13:30,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c58e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:13:30, skipping insertion in model container [2022-12-13 17:13:30,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:13:29" (2/3) ... [2022-12-13 17:13:30,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c58e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:13:30, skipping insertion in model container [2022-12-13 17:13:30,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:13:30" (3/3) ... [2022-12-13 17:13:30,348 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2022-12-13 17:13:30,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:13:30,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:13:30,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 17:13:30,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:13:30,437 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 17:13:30,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-12-13 17:13:30,510 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-13 17:13:30,510 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:13:30,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 17:13:30,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-12-13 17:13:30,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-12-13 17:13:30,521 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:13:30,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-12-13 17:13:30,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-12-13 17:13:30,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-12-13 17:13:30,553 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-13 17:13:30,553 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:13:30,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 17:13:30,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-12-13 17:13:33,198 INFO L134 LiptonReduction]: Checked pairs total: 3304 [2022-12-13 17:13:33,199 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-12-13 17:13:33,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:13:33,214 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;@68f2b38a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:13:33,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 17:13:33,216 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 17:13:33,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:13:33,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:33,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:13:33,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 14140798, now seen corresponding path program 1 times [2022-12-13 17:13:33,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:33,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340745241] [2022-12-13 17:13:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:33,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:33,463 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 17:13:33,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340745241] [2022-12-13 17:13:33,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340745241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:33,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:33,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:13:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764527364] [2022-12-13 17:13:33,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:33,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:33,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:33,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:33,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 17:13:33,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:33,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:33,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:33,667 INFO L130 PetriNetUnfolder]: 583/864 cut-off events. [2022-12-13 17:13:33,667 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:13:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 864 events. 583/864 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3544 event pairs, 92 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 1740. Up to 727 conditions per place. [2022-12-13 17:13:33,674 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2022-12-13 17:13:33,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2022-12-13 17:13:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-12-13 17:13:33,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2022-12-13 17:13:33,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-12-13 17:13:33,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-12-13 17:13:33,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:33,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-12-13 17:13:33,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 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 17:13:33,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:33,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:33,703 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2022-12-13 17:13:33,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2022-12-13 17:13:33,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:13:33,708 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2022-12-13 17:13:33,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-12-13 17:13:33,713 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-12-13 17:13:33,714 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2022-12-13 17:13:33,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 17:13:33,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:33,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:13:33,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:13:33,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash 14140849, now seen corresponding path program 1 times [2022-12-13 17:13:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399645012] [2022-12-13 17:13:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:33,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:33,783 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 17:13:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:33,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399645012] [2022-12-13 17:13:33,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399645012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:33,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:33,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:13:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158684757] [2022-12-13 17:13:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:33,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:33,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:33,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 17:13:33,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:33,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:33,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:33,905 INFO L130 PetriNetUnfolder]: 699/1050 cut-off events. [2022-12-13 17:13:33,905 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-13 17:13:33,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 1050 events. 699/1050 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4638 event pairs, 277 based on Foata normal form. 50/528 useless extension candidates. Maximal degree in co-relation 2656. Up to 611 conditions per place. [2022-12-13 17:13:33,910 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-12-13 17:13:33,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 216 flow [2022-12-13 17:13:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-12-13 17:13:33,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5049645390070922 [2022-12-13 17:13:33,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-12-13 17:13:33,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-12-13 17:13:33,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:33,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-12-13 17:13:33,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 17:13:33,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:33,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:33,918 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 356 transitions. [2022-12-13 17:13:33,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 216 flow [2022-12-13 17:13:33,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:33,919 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 97 flow [2022-12-13 17:13:33,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-12-13 17:13:33,920 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-12-13 17:13:33,920 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 97 flow [2022-12-13 17:13:33,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 17:13:33,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:33,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:13:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:13:33,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 438366704, now seen corresponding path program 1 times [2022-12-13 17:13:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930379143] [2022-12-13 17:13:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:33,963 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 17:13:33,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:33,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930379143] [2022-12-13 17:13:33,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930379143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:33,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:33,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:13:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057747533] [2022-12-13 17:13:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:33,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:33,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:33,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 17:13:33,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:33,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:33,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:34,068 INFO L130 PetriNetUnfolder]: 625/938 cut-off events. [2022-12-13 17:13:34,068 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-12-13 17:13:34,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 938 events. 625/938 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3853 event pairs, 435 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 2500. Up to 938 conditions per place. [2022-12-13 17:13:34,072 INFO L137 encePairwiseOnDemand]: 233/235 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 17:13:34,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 141 flow [2022-12-13 17:13:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-12-13 17:13:34,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47801418439716314 [2022-12-13 17:13:34,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2022-12-13 17:13:34,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2022-12-13 17:13:34,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:34,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2022-12-13 17:13:34,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 17:13:34,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:34,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:34,078 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 97 flow. Second operand 3 states and 337 transitions. [2022-12-13 17:13:34,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 141 flow [2022-12-13 17:13:34,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:34,079 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 90 flow [2022-12-13 17:13:34,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2022-12-13 17:13:34,080 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-12-13 17:13:34,080 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 90 flow [2022-12-13 17:13:34,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 17:13:34,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:34,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:13:34,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:13:34,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:34,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash 438366653, now seen corresponding path program 1 times [2022-12-13 17:13:34,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:34,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184988449] [2022-12-13 17:13:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:34,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:34,149 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 17:13:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:34,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184988449] [2022-12-13 17:13:34,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184988449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:34,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418221153] [2022-12-13 17:13:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:34,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:34,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:34,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:13:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:34,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:13:34,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:34,260 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 17:13:34,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:13:34,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418221153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:34,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:13:34,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 17:13:34,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623323217] [2022-12-13 17:13:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:34,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:13:34,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:34,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:13:34,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:13:34,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2022-12-13 17:13:34,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 17:13:34,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:34,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2022-12-13 17:13:34,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:34,384 INFO L130 PetriNetUnfolder]: 563/844 cut-off events. [2022-12-13 17:13:34,384 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-12-13 17:13:34,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 844 events. 563/844 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3482 event pairs, 207 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 2220. Up to 530 conditions per place. [2022-12-13 17:13:34,388 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 33 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2022-12-13 17:13:34,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 208 flow [2022-12-13 17:13:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:13:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:13:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-12-13 17:13:34,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2022-12-13 17:13:34,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-12-13 17:13:34,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-12-13 17:13:34,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:34,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-12-13 17:13:34,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 17:13:34,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 17:13:34,392 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 17:13:34,392 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 90 flow. Second operand 4 states and 455 transitions. [2022-12-13 17:13:34,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 208 flow [2022-12-13 17:13:34,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:34,393 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 124 flow [2022-12-13 17:13:34,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-12-13 17:13:34,394 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-12-13 17:13:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 124 flow [2022-12-13 17:13:34,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 17:13:34,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:34,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:13:34,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:13:34,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:34,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 438366654, now seen corresponding path program 1 times [2022-12-13 17:13:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:34,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319009184] [2022-12-13 17:13:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:34,738 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 17:13:34,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:34,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319009184] [2022-12-13 17:13:34,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319009184] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:34,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310854673] [2022-12-13 17:13:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:34,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:34,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:34,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:34,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:13:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:34,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:13:34,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:34,826 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 17:13:34,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:34,846 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 17:13:34,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310854673] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:34,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:34,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 17:13:34,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542098258] [2022-12-13 17:13:34,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:34,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:13:34,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:13:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:13:34,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:34,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 124 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 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 17:13:34,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:34,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:35,072 INFO L130 PetriNetUnfolder]: 983/1468 cut-off events. [2022-12-13 17:13:35,072 INFO L131 PetriNetUnfolder]: For 948/948 co-relation queries the response was YES. [2022-12-13 17:13:35,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 1468 events. 983/1468 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6526 event pairs, 75 based on Foata normal form. 162/1196 useless extension candidates. Maximal degree in co-relation 4530. Up to 837 conditions per place. [2022-12-13 17:13:35,079 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 67 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2022-12-13 17:13:35,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 84 transitions, 500 flow [2022-12-13 17:13:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:13:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:13:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2022-12-13 17:13:35,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2022-12-13 17:13:35,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2022-12-13 17:13:35,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2022-12-13 17:13:35,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:35,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2022-12-13 17:13:35,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 17:13:35,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 17:13:35,085 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 17:13:35,085 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 124 flow. Second operand 6 states and 700 transitions. [2022-12-13 17:13:35,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 84 transitions, 500 flow [2022-12-13 17:13:35,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:35,088 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 309 flow [2022-12-13 17:13:35,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2022-12-13 17:13:35,088 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2022-12-13 17:13:35,089 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 309 flow [2022-12-13 17:13:35,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 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 17:13:35,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:35,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:13:35,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:13:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:35,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:35,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash 706457306, now seen corresponding path program 1 times [2022-12-13 17:13:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:35,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157761764] [2022-12-13 17:13:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:35,326 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 17:13:35,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:35,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157761764] [2022-12-13 17:13:35,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157761764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:35,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:35,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:13:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871831823] [2022-12-13 17:13:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:35,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:35,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:35,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:35,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 17:13:35,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:35,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:35,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:35,561 INFO L130 PetriNetUnfolder]: 1463/2179 cut-off events. [2022-12-13 17:13:35,561 INFO L131 PetriNetUnfolder]: For 6251/6251 co-relation queries the response was YES. [2022-12-13 17:13:35,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 2179 events. 1463/2179 cut-off events. For 6251/6251 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10516 event pairs, 388 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 8323. Up to 1263 conditions per place. [2022-12-13 17:13:35,577 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 69 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-13 17:13:35,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 733 flow [2022-12-13 17:13:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 17:13:35,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2022-12-13 17:13:35,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 17:13:35,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 17:13:35,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:35,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 17:13:35,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 17:13:35,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:35,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:35,583 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 309 flow. Second operand 3 states and 348 transitions. [2022-12-13 17:13:35,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 733 flow [2022-12-13 17:13:35,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 666 flow, removed 30 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:35,593 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 289 flow [2022-12-13 17:13:35,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 17:13:35,594 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2022-12-13 17:13:35,594 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 289 flow [2022-12-13 17:13:35,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 17:13:35,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:35,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:13:35,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:13:35,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash 706457209, now seen corresponding path program 1 times [2022-12-13 17:13:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645842282] [2022-12-13 17:13:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:35,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:35,620 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 17:13:35,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:35,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645842282] [2022-12-13 17:13:35,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645842282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:35,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:35,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:13:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132724454] [2022-12-13 17:13:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:35,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:35,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:35,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 17:13:35,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:35,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:35,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:35,796 INFO L130 PetriNetUnfolder]: 1303/1942 cut-off events. [2022-12-13 17:13:35,796 INFO L131 PetriNetUnfolder]: For 4548/4548 co-relation queries the response was YES. [2022-12-13 17:13:35,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7468 conditions, 1942 events. 1303/1942 cut-off events. For 4548/4548 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9160 event pairs, 388 based on Foata normal form. 0/1543 useless extension candidates. Maximal degree in co-relation 7449. Up to 1026 conditions per place. [2022-12-13 17:13:35,805 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 67 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-12-13 17:13:35,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 674 flow [2022-12-13 17:13:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-12-13 17:13:35,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2022-12-13 17:13:35,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-12-13 17:13:35,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-12-13 17:13:35,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:35,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-12-13 17:13:35,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 17:13:35,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:35,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:35,809 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 289 flow. Second operand 3 states and 340 transitions. [2022-12-13 17:13:35,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 674 flow [2022-12-13 17:13:35,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:35,813 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 305 flow [2022-12-13 17:13:35,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 17:13:35,814 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2022-12-13 17:13:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 305 flow [2022-12-13 17:13:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 17:13:35,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:35,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:13:35,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:13:35,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash 706457277, now seen corresponding path program 1 times [2022-12-13 17:13:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:35,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360695113] [2022-12-13 17:13:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:35,836 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 17:13:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360695113] [2022-12-13 17:13:35,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360695113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:35,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:35,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:13:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986731640] [2022-12-13 17:13:35,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:35,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:35,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:35,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:35,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 17:13:35,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:35,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:35,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:35,999 INFO L130 PetriNetUnfolder]: 1143/1705 cut-off events. [2022-12-13 17:13:36,000 INFO L131 PetriNetUnfolder]: For 4603/4603 co-relation queries the response was YES. [2022-12-13 17:13:36,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6917 conditions, 1705 events. 1143/1705 cut-off events. For 4603/4603 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7866 event pairs, 277 based on Foata normal form. 77/1481 useless extension candidates. Maximal degree in co-relation 6895. Up to 1026 conditions per place. [2022-12-13 17:13:36,008 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 66 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2022-12-13 17:13:36,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 682 flow [2022-12-13 17:13:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-12-13 17:13:36,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:13:36,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-12-13 17:13:36,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-12-13 17:13:36,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:36,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-12-13 17:13:36,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 17:13:36,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:36,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:36,015 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 305 flow. Second operand 3 states and 339 transitions. [2022-12-13 17:13:36,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 682 flow [2022-12-13 17:13:36,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 673 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:13:36,019 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 298 flow [2022-12-13 17:13:36,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2022-12-13 17:13:36,020 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-12-13 17:13:36,020 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 298 flow [2022-12-13 17:13:36,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 17:13:36,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:36,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:13:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:13:36,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash 706455305, now seen corresponding path program 1 times [2022-12-13 17:13:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531460687] [2022-12-13 17:13:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:36,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:36,044 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 17:13:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:36,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531460687] [2022-12-13 17:13:36,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531460687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:36,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:36,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:13:36,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753477203] [2022-12-13 17:13:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:36,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:36,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:36,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 17:13:36,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:36,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:36,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:36,188 INFO L130 PetriNetUnfolder]: 1087/1621 cut-off events. [2022-12-13 17:13:36,188 INFO L131 PetriNetUnfolder]: For 3332/3332 co-relation queries the response was YES. [2022-12-13 17:13:36,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6674 conditions, 1621 events. 1087/1621 cut-off events. For 3332/3332 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6952 event pairs, 332 based on Foata normal form. 77/1447 useless extension candidates. Maximal degree in co-relation 6653. Up to 1128 conditions per place. [2022-12-13 17:13:36,196 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-12-13 17:13:36,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 469 flow [2022-12-13 17:13:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 17:13:36,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2022-12-13 17:13:36,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 17:13:36,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 17:13:36,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:36,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 17:13:36,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 17:13:36,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:36,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:36,200 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 298 flow. Second operand 3 states and 348 transitions. [2022-12-13 17:13:36,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 469 flow [2022-12-13 17:13:36,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:36,204 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 317 flow [2022-12-13 17:13:36,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 17:13:36,205 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-13 17:13:36,205 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 317 flow [2022-12-13 17:13:36,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 17:13:36,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:36,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:36,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:13:36,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash 425340463, now seen corresponding path program 1 times [2022-12-13 17:13:36,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:36,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327393013] [2022-12-13 17:13:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:36,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:36,236 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 17:13:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327393013] [2022-12-13 17:13:36,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327393013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159716727] [2022-12-13 17:13:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:36,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:36,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:36,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:36,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:13:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:36,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:13:36,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:36,303 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 17:13:36,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:13:36,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159716727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:36,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:13:36,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 17:13:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029678898] [2022-12-13 17:13:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:36,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:13:36,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:13:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:13:36,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:36,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 17:13:36,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:36,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:36,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:36,463 INFO L130 PetriNetUnfolder]: 935/1396 cut-off events. [2022-12-13 17:13:36,463 INFO L131 PetriNetUnfolder]: For 4448/4448 co-relation queries the response was YES. [2022-12-13 17:13:36,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5969 conditions, 1396 events. 935/1396 cut-off events. For 4448/4448 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6221 event pairs, 162 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 5946. Up to 973 conditions per place. [2022-12-13 17:13:36,469 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 17:13:36,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 707 flow [2022-12-13 17:13:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:13:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:13:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2022-12-13 17:13:36,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4776595744680851 [2022-12-13 17:13:36,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2022-12-13 17:13:36,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2022-12-13 17:13:36,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:36,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2022-12-13 17:13:36,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 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 17:13:36,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 17:13:36,477 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 17:13:36,477 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 317 flow. Second operand 4 states and 449 transitions. [2022-12-13 17:13:36,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 707 flow [2022-12-13 17:13:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:36,482 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 311 flow [2022-12-13 17:13:36,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2022-12-13 17:13:36,483 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-13 17:13:36,483 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 311 flow [2022-12-13 17:13:36,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 17:13:36,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:36,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:36,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:13:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:13:36,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash 425340434, now seen corresponding path program 1 times [2022-12-13 17:13:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:36,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161729293] [2022-12-13 17:13:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:36,809 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 17:13:36,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161729293] [2022-12-13 17:13:36,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161729293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:36,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962843436] [2022-12-13 17:13:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:36,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:36,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:36,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:13:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:36,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:13:36,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:36,922 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 17:13:36,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:36,943 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 17:13:36,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962843436] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:36,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:36,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 17:13:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340700939] [2022-12-13 17:13:36,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:13:36,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:36,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:13:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:13:36,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2022-12-13 17:13:36,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 17:13:36,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:36,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2022-12-13 17:13:36,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:37,380 INFO L130 PetriNetUnfolder]: 2224/3269 cut-off events. [2022-12-13 17:13:37,380 INFO L131 PetriNetUnfolder]: For 11767/11767 co-relation queries the response was YES. [2022-12-13 17:13:37,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13812 conditions, 3269 events. 2224/3269 cut-off events. For 11767/11767 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15788 event pairs, 162 based on Foata normal form. 219/2986 useless extension candidates. Maximal degree in co-relation 13788. Up to 945 conditions per place. [2022-12-13 17:13:37,400 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 234 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-12-13 17:13:37,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 243 transitions, 2635 flow [2022-12-13 17:13:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:13:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:13:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1012 transitions. [2022-12-13 17:13:37,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47848699763593383 [2022-12-13 17:13:37,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1012 transitions. [2022-12-13 17:13:37,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1012 transitions. [2022-12-13 17:13:37,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:37,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1012 transitions. [2022-12-13 17:13:37,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.44444444444444) internal successors, (1012), 9 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 17:13:37,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 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 17:13:37,408 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 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 17:13:37,408 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 311 flow. Second operand 9 states and 1012 transitions. [2022-12-13 17:13:37,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 243 transitions, 2635 flow [2022-12-13 17:13:37,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 243 transitions, 2632 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:13:37,414 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 370 flow [2022-12-13 17:13:37,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2022-12-13 17:13:37,414 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-12-13 17:13:37,415 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 370 flow [2022-12-13 17:13:37,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 17:13:37,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:37,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:37,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:13:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:37,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash 425340366, now seen corresponding path program 1 times [2022-12-13 17:13:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:37,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062142468] [2022-12-13 17:13:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:37,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:37,728 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 17:13:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062142468] [2022-12-13 17:13:37,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062142468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828627622] [2022-12-13 17:13:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:37,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:37,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:37,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:13:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:37,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:13:37,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:37,818 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 17:13:37,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:13:37,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828627622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:37,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:13:37,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 17:13:37,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37448760] [2022-12-13 17:13:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:37,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:13:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:37,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:13:37,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:13:37,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:37,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 17:13:37,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:37,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:37,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:38,081 INFO L130 PetriNetUnfolder]: 1695/2521 cut-off events. [2022-12-13 17:13:38,081 INFO L131 PetriNetUnfolder]: For 9589/9589 co-relation queries the response was YES. [2022-12-13 17:13:38,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11543 conditions, 2521 events. 1695/2521 cut-off events. For 9589/9589 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11934 event pairs, 162 based on Foata normal form. 292/2648 useless extension candidates. Maximal degree in co-relation 11516. Up to 2098 conditions per place. [2022-12-13 17:13:38,094 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 66 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-12-13 17:13:38,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 732 flow [2022-12-13 17:13:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:13:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:13:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-12-13 17:13:38,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2022-12-13 17:13:38,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-12-13 17:13:38,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-12-13 17:13:38,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:38,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-12-13 17:13:38,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 17:13:38,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 17:13:38,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 17:13:38,099 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 370 flow. Second operand 4 states and 448 transitions. [2022-12-13 17:13:38,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 732 flow [2022-12-13 17:13:38,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:13:38,108 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 339 flow [2022-12-13 17:13:38,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2022-12-13 17:13:38,109 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2022-12-13 17:13:38,109 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 339 flow [2022-12-13 17:13:38,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 17:13:38,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:38,110 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:38,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:13:38,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:13:38,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash 425278415, now seen corresponding path program 1 times [2022-12-13 17:13:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:38,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269859393] [2022-12-13 17:13:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:38,338 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 17:13:38,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:38,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269859393] [2022-12-13 17:13:38,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269859393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:13:38,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:13:38,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:13:38,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990362125] [2022-12-13 17:13:38,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:13:38,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:13:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:38,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:13:38,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:13:38,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:13:38,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 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 17:13:38,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:38,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:13:38,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:38,573 INFO L130 PetriNetUnfolder]: 1431/2158 cut-off events. [2022-12-13 17:13:38,574 INFO L131 PetriNetUnfolder]: For 7821/7821 co-relation queries the response was YES. [2022-12-13 17:13:38,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 2158 events. 1431/2158 cut-off events. For 7821/7821 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9802 event pairs, 1013 based on Foata normal form. 0/2158 useless extension candidates. Maximal degree in co-relation 9670. Up to 2158 conditions per place. [2022-12-13 17:13:38,586 INFO L137 encePairwiseOnDemand]: 233/235 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 17:13:38,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 36 transitions, 373 flow [2022-12-13 17:13:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:13:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:13:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2022-12-13 17:13:38,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47092198581560285 [2022-12-13 17:13:38,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2022-12-13 17:13:38,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2022-12-13 17:13:38,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:38,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2022-12-13 17:13:38,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 17:13:38,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:38,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 17:13:38,592 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 339 flow. Second operand 3 states and 332 transitions. [2022-12-13 17:13:38,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 36 transitions, 373 flow [2022-12-13 17:13:38,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:13:38,598 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 300 flow [2022-12-13 17:13:38,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2022-12-13 17:13:38,599 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2022-12-13 17:13:38,599 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 300 flow [2022-12-13 17:13:38,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 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 17:13:38,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:38,600 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 17:13:38,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:13:38,600 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1612686017, now seen corresponding path program 2 times [2022-12-13 17:13:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266496836] [2022-12-13 17:13:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:38,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:38,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266496836] [2022-12-13 17:13:38,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266496836] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:38,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257217621] [2022-12-13 17:13:38,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:13:38,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:38,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:38,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:38,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:13:38,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:13:38,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:13:38,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:13:38,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:38,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:38,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257217621] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:38,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:38,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:13:38,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147193129] [2022-12-13 17:13:38,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:38,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:13:38,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:38,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:13:38,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:13:38,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:38,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 300 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 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 17:13:38,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:38,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:38,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:39,523 INFO L130 PetriNetUnfolder]: 2423/3658 cut-off events. [2022-12-13 17:13:39,523 INFO L131 PetriNetUnfolder]: For 12728/12728 co-relation queries the response was YES. [2022-12-13 17:13:39,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16301 conditions, 3658 events. 2423/3658 cut-off events. For 12728/12728 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17869 event pairs, 175 based on Foata normal form. 496/4154 useless extension candidates. Maximal degree in co-relation 16274. Up to 1533 conditions per place. [2022-12-13 17:13:39,535 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 149 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2022-12-13 17:13:39,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 181 transitions, 1539 flow [2022-12-13 17:13:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:13:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:13:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-12-13 17:13:39,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2022-12-13 17:13:39,538 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-12-13 17:13:39,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-12-13 17:13:39,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:39,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-12-13 17:13:39,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.16666666666667) internal successors, (1370), 12 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 17:13:39,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 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 17:13:39,546 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 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 17:13:39,546 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 300 flow. Second operand 12 states and 1370 transitions. [2022-12-13 17:13:39,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 181 transitions, 1539 flow [2022-12-13 17:13:39,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 181 transitions, 1538 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:13:39,556 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 642 flow [2022-12-13 17:13:39,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=642, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-12-13 17:13:39,557 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2022-12-13 17:13:39,557 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 642 flow [2022-12-13 17:13:39,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 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 17:13:39,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:39,558 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:39,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:13:39,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:39,759 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 298729377, now seen corresponding path program 1 times [2022-12-13 17:13:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:39,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942196938] [2022-12-13 17:13:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942196938] [2022-12-13 17:13:39,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942196938] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870348814] [2022-12-13 17:13:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:39,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:39,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:39,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:39,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:13:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:39,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:13:39,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:39,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:39,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870348814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:39,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:39,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 17:13:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891136897] [2022-12-13 17:13:39,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:39,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:13:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:13:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:13:40,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:40,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 642 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 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 17:13:40,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:40,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:40,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:40,565 INFO L130 PetriNetUnfolder]: 3127/4714 cut-off events. [2022-12-13 17:13:40,565 INFO L131 PetriNetUnfolder]: For 32393/32393 co-relation queries the response was YES. [2022-12-13 17:13:40,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 4714 events. 3127/4714 cut-off events. For 32393/32393 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24646 event pairs, 230 based on Foata normal form. 308/5022 useless extension candidates. Maximal degree in co-relation 24393. Up to 3357 conditions per place. [2022-12-13 17:13:40,598 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 115 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2022-12-13 17:13:40,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 1473 flow [2022-12-13 17:13:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:13:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:13:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 904 transitions. [2022-12-13 17:13:40,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:13:40,601 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 904 transitions. [2022-12-13 17:13:40,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 904 transitions. [2022-12-13 17:13:40,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:40,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 904 transitions. [2022-12-13 17:13:40,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:13:40,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 17:13:40,605 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 17:13:40,605 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 642 flow. Second operand 8 states and 904 transitions. [2022-12-13 17:13:40,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 1473 flow [2022-12-13 17:13:40,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 1387 flow, removed 40 selfloop flow, removed 2 redundant places. [2022-12-13 17:13:40,648 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 838 flow [2022-12-13 17:13:40,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2022-12-13 17:13:40,649 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2022-12-13 17:13:40,649 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 838 flow [2022-12-13 17:13:40,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 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 17:13:40,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:40,650 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:40,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:13:40,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:13:40,852 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1164663805, now seen corresponding path program 2 times [2022-12-13 17:13:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:40,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950804183] [2022-12-13 17:13:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:40,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950804183] [2022-12-13 17:13:40,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950804183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:40,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112780725] [2022-12-13 17:13:40,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:13:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:40,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:40,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:13:41,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:13:41,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:13:41,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:13:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:41,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:41,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112780725] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:41,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:41,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:13:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381981025] [2022-12-13 17:13:41,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:13:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:13:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:13:41,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2022-12-13 17:13:41,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 838 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 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 17:13:41,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:41,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2022-12-13 17:13:41,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:42,408 INFO L130 PetriNetUnfolder]: 6487/9754 cut-off events. [2022-12-13 17:13:42,408 INFO L131 PetriNetUnfolder]: For 110723/110723 co-relation queries the response was YES. [2022-12-13 17:13:42,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51877 conditions, 9754 events. 6487/9754 cut-off events. For 110723/110723 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 53573 event pairs, 325 based on Foata normal form. 840/10594 useless extension candidates. Maximal degree in co-relation 51838. Up to 2941 conditions per place. [2022-12-13 17:13:42,450 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2022-12-13 17:13:42,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9790 flow [2022-12-13 17:13:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:13:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:13:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-12-13 17:13:42,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726950354609929 [2022-12-13 17:13:42,456 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-12-13 17:13:42,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-12-13 17:13:42,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:42,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-12-13 17:13:42,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 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 17:13:42,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 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 17:13:42,468 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 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 17:13:42,468 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 838 flow. Second operand 12 states and 1333 transitions. [2022-12-13 17:13:42,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9790 flow [2022-12-13 17:13:42,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 665 transitions, 9074 flow, removed 330 selfloop flow, removed 2 redundant places. [2022-12-13 17:13:42,548 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 856 flow [2022-12-13 17:13:42,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=856, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2022-12-13 17:13:42,549 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2022-12-13 17:13:42,549 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 856 flow [2022-12-13 17:13:42,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 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 17:13:42,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:42,550 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:42,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:13:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:13:42,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1588219877, now seen corresponding path program 1 times [2022-12-13 17:13:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:42,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767186793] [2022-12-13 17:13:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:42,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:42,867 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 17:13:42,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:42,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767186793] [2022-12-13 17:13:42,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767186793] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:42,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387148190] [2022-12-13 17:13:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:42,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:42,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:42,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:42,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:13:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:13:42,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:42,995 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 17:13:42,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:43,045 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 17:13:43,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387148190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:43,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:43,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:13:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436804343] [2022-12-13 17:13:43,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:13:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:13:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:13:43,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:43,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 856 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 17:13:43,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:43,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:43,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:45,016 INFO L130 PetriNetUnfolder]: 9719/14783 cut-off events. [2022-12-13 17:13:45,017 INFO L131 PetriNetUnfolder]: For 148597/148597 co-relation queries the response was YES. [2022-12-13 17:13:45,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79136 conditions, 14783 events. 9719/14783 cut-off events. For 148597/148597 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 91739 event pairs, 344 based on Foata normal form. 658/15441 useless extension candidates. Maximal degree in co-relation 79091. Up to 5519 conditions per place. [2022-12-13 17:13:45,116 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 74 changer transitions 0/330 dead transitions. [2022-12-13 17:13:45,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 330 transitions, 3782 flow [2022-12-13 17:13:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:13:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 17:13:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-12-13 17:13:45,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:13:45,123 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-12-13 17:13:45,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-12-13 17:13:45,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:45,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-12-13 17:13:45,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.0) internal successors, (1695), 15 states have internal predecessors, (1695), 0 states have call successors, (0), 0 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 17:13:45,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 235.0) internal successors, (3760), 16 states have internal predecessors, (3760), 0 states have call successors, (0), 0 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 17:13:45,134 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 235.0) internal successors, (3760), 16 states have internal predecessors, (3760), 0 states have call successors, (0), 0 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 17:13:45,134 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 856 flow. Second operand 15 states and 1695 transitions. [2022-12-13 17:13:45,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 330 transitions, 3782 flow [2022-12-13 17:13:45,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 330 transitions, 3494 flow, removed 91 selfloop flow, removed 5 redundant places. [2022-12-13 17:13:45,452 INFO L231 Difference]: Finished difference. Result has 106 places, 115 transitions, 1580 flow [2022-12-13 17:13:45,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1580, PETRI_PLACES=106, PETRI_TRANSITIONS=115} [2022-12-13 17:13:45,452 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2022-12-13 17:13:45,452 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 115 transitions, 1580 flow [2022-12-13 17:13:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 17:13:45,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:45,453 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:45,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 17:13:45,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:13:45,654 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1282689847, now seen corresponding path program 2 times [2022-12-13 17:13:45,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:45,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883060166] [2022-12-13 17:13:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:45,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:45,733 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 17:13:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:45,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883060166] [2022-12-13 17:13:45,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883060166] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:45,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780044261] [2022-12-13 17:13:45,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:13:45,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:45,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:45,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:13:45,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:13:45,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:13:45,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:13:45,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:45,860 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 17:13:45,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:45,913 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 17:13:45,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780044261] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:45,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:45,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:13:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019434652] [2022-12-13 17:13:45,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:13:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:13:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:13:45,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:45,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 115 transitions, 1580 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 17:13:45,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:45,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:48,827 INFO L130 PetriNetUnfolder]: 14457/22088 cut-off events. [2022-12-13 17:13:48,827 INFO L131 PetriNetUnfolder]: For 313145/313145 co-relation queries the response was YES. [2022-12-13 17:13:48,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132858 conditions, 22088 events. 14457/22088 cut-off events. For 313145/313145 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 148077 event pairs, 655 based on Foata normal form. 727/22815 useless extension candidates. Maximal degree in co-relation 132806. Up to 9426 conditions per place. [2022-12-13 17:13:48,977 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 329 selfloop transitions, 108 changer transitions 0/437 dead transitions. [2022-12-13 17:13:48,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 437 transitions, 5353 flow [2022-12-13 17:13:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:13:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 17:13:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2023 transitions. [2022-12-13 17:13:48,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4782505910165485 [2022-12-13 17:13:48,981 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2023 transitions. [2022-12-13 17:13:48,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2023 transitions. [2022-12-13 17:13:48,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:48,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2023 transitions. [2022-12-13 17:13:48,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.38888888888889) internal successors, (2023), 18 states have internal predecessors, (2023), 0 states have call successors, (0), 0 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 17:13:48,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 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 17:13:48,987 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 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 17:13:48,987 INFO L175 Difference]: Start difference. First operand has 106 places, 115 transitions, 1580 flow. Second operand 18 states and 2023 transitions. [2022-12-13 17:13:48,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 437 transitions, 5353 flow [2022-12-13 17:13:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 437 transitions, 5087 flow, removed 124 selfloop flow, removed 6 redundant places. [2022-12-13 17:13:50,507 INFO L231 Difference]: Finished difference. Result has 124 places, 177 transitions, 2674 flow [2022-12-13 17:13:50,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2674, PETRI_PLACES=124, PETRI_TRANSITIONS=177} [2022-12-13 17:13:50,507 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2022-12-13 17:13:50,507 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 177 transitions, 2674 flow [2022-12-13 17:13:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 17:13:50,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:13:50,508 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:13:50,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 17:13:50,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:13:50,708 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:13:50,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:13:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1104063780, now seen corresponding path program 1 times [2022-12-13 17:13:50,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:13:50,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156861827] [2022-12-13 17:13:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:13:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:13:50,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156861827] [2022-12-13 17:13:50,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156861827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:13:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989805760] [2022-12-13 17:13:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:13:50,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:13:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:13:50,797 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:13:50,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:13:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:13:50,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:13:50,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:13:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:50,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:13:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:13:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989805760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:13:50,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:13:50,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 17:13:50,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610141366] [2022-12-13 17:13:50,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:13:50,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 17:13:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:13:50,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 17:13:50,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-12-13 17:13:51,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:13:51,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 177 transitions, 2674 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 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 17:13:51,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:13:51,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:13:51,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:13:55,856 INFO L130 PetriNetUnfolder]: 19869/30502 cut-off events. [2022-12-13 17:13:55,856 INFO L131 PetriNetUnfolder]: For 618169/618169 co-relation queries the response was YES. [2022-12-13 17:13:55,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197462 conditions, 30502 events. 19869/30502 cut-off events. For 618169/618169 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 215934 event pairs, 1292 based on Foata normal form. 994/31496 useless extension candidates. Maximal degree in co-relation 197404. Up to 12100 conditions per place. [2022-12-13 17:13:56,074 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 338 selfloop transitions, 153 changer transitions 0/491 dead transitions. [2022-12-13 17:13:56,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 491 transitions, 6576 flow [2022-12-13 17:13:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:13:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 17:13:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1920 transitions. [2022-12-13 17:13:56,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806007509386733 [2022-12-13 17:13:56,077 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1920 transitions. [2022-12-13 17:13:56,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1920 transitions. [2022-12-13 17:13:56,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:13:56,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1920 transitions. [2022-12-13 17:13:56,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 112.94117647058823) internal successors, (1920), 17 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 17:13:56,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 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 17:13:56,082 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 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 17:13:56,082 INFO L175 Difference]: Start difference. First operand has 124 places, 177 transitions, 2674 flow. Second operand 17 states and 1920 transitions. [2022-12-13 17:13:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 491 transitions, 6576 flow [2022-12-13 17:14:00,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 491 transitions, 6359 flow, removed 104 selfloop flow, removed 3 redundant places. [2022-12-13 17:14:00,118 INFO L231 Difference]: Finished difference. Result has 145 places, 239 transitions, 4096 flow [2022-12-13 17:14:00,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4096, PETRI_PLACES=145, PETRI_TRANSITIONS=239} [2022-12-13 17:14:00,119 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2022-12-13 17:14:00,119 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 239 transitions, 4096 flow [2022-12-13 17:14:00,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 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 17:14:00,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:00,119 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:00,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:14:00,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:00,320 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:14:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash 156401254, now seen corresponding path program 3 times [2022-12-13 17:14:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:00,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549162903] [2022-12-13 17:14:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:00,418 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 17:14:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:00,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549162903] [2022-12-13 17:14:00,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549162903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:00,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725921429] [2022-12-13 17:14:00,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:14:00,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:00,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:00,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:00,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:14:00,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 17:14:00,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:14:00,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:14:00,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:00,564 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 17:14:00,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:14:00,640 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 17:14:00,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725921429] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:14:00,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:14:00,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 17:14:00,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288675471] [2022-12-13 17:14:00,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:14:00,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:14:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:14:00,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:14:00,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:14:00,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 239 transitions, 4096 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 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 17:14:00,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:00,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:14:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:07,055 INFO L130 PetriNetUnfolder]: 23919/36725 cut-off events. [2022-12-13 17:14:07,055 INFO L131 PetriNetUnfolder]: For 1032887/1032887 co-relation queries the response was YES. [2022-12-13 17:14:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254626 conditions, 36725 events. 23919/36725 cut-off events. For 1032887/1032887 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 264911 event pairs, 1294 based on Foata normal form. 1141/37866 useless extension candidates. Maximal degree in co-relation 254559. Up to 11634 conditions per place. [2022-12-13 17:14:07,372 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 388 selfloop transitions, 237 changer transitions 0/625 dead transitions. [2022-12-13 17:14:07,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 625 transitions, 8961 flow [2022-12-13 17:14:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 17:14:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 17:14:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-12-13 17:14:07,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806484295845998 [2022-12-13 17:14:07,375 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-12-13 17:14:07,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-12-13 17:14:07,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:07,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-12-13 17:14:07,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.95238095238095) internal successors, (2372), 21 states have internal predecessors, (2372), 0 states have call successors, (0), 0 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 17:14:07,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 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 17:14:07,381 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 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 17:14:07,381 INFO L175 Difference]: Start difference. First operand has 145 places, 239 transitions, 4096 flow. Second operand 21 states and 2372 transitions. [2022-12-13 17:14:07,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 625 transitions, 8961 flow [2022-12-13 17:14:15,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 625 transitions, 8549 flow, removed 191 selfloop flow, removed 6 redundant places. [2022-12-13 17:14:15,447 INFO L231 Difference]: Finished difference. Result has 168 places, 302 transitions, 5707 flow [2022-12-13 17:14:15,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5707, PETRI_PLACES=168, PETRI_TRANSITIONS=302} [2022-12-13 17:14:15,448 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2022-12-13 17:14:15,448 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 302 transitions, 5707 flow [2022-12-13 17:14:15,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 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 17:14:15,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:15,448 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:15,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 17:14:15,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:15,649 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:14:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash 13260304, now seen corresponding path program 4 times [2022-12-13 17:14:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:15,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449305547] [2022-12-13 17:14:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:15,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:15,734 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 17:14:15,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:15,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449305547] [2022-12-13 17:14:15,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449305547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:15,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859050331] [2022-12-13 17:14:15,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:14:15,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:15,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:15,736 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:14:15,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:14:15,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:14:15,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:14:15,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:15,868 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 17:14:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:14:15,929 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 17:14:15,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859050331] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:14:15,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:14:15,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 17:14:15,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015329606] [2022-12-13 17:14:15,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:14:15,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:14:15,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:14:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:14:15,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:14:15,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 302 transitions, 5707 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 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 17:14:15,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:15,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:14:15,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:24,804 INFO L130 PetriNetUnfolder]: 31863/48841 cut-off events. [2022-12-13 17:14:24,805 INFO L131 PetriNetUnfolder]: For 1515546/1515546 co-relation queries the response was YES. [2022-12-13 17:14:25,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355207 conditions, 48841 events. 31863/48841 cut-off events. For 1515546/1515546 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 366535 event pairs, 1435 based on Foata normal form. 1095/49936 useless extension candidates. Maximal degree in co-relation 355132. Up to 17825 conditions per place. [2022-12-13 17:14:25,438 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 521 selfloop transitions, 282 changer transitions 0/803 dead transitions. [2022-12-13 17:14:25,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 803 transitions, 12441 flow [2022-12-13 17:14:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:14:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 17:14:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2921 transitions. [2022-12-13 17:14:25,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47806873977086745 [2022-12-13 17:14:25,441 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2921 transitions. [2022-12-13 17:14:25,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2921 transitions. [2022-12-13 17:14:25,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:25,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2921 transitions. [2022-12-13 17:14:25,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.34615384615384) internal successors, (2921), 26 states have internal predecessors, (2921), 0 states have call successors, (0), 0 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 17:14:25,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 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 17:14:25,449 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 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 17:14:25,449 INFO L175 Difference]: Start difference. First operand has 168 places, 302 transitions, 5707 flow. Second operand 26 states and 2921 transitions. [2022-12-13 17:14:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 803 transitions, 12441 flow [2022-12-13 17:14:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 803 transitions, 11977 flow, removed 215 selfloop flow, removed 6 redundant places. [2022-12-13 17:14:40,087 INFO L231 Difference]: Finished difference. Result has 197 places, 405 transitions, 8186 flow [2022-12-13 17:14:40,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8186, PETRI_PLACES=197, PETRI_TRANSITIONS=405} [2022-12-13 17:14:40,087 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2022-12-13 17:14:40,087 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 405 transitions, 8186 flow [2022-12-13 17:14:40,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 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 17:14:40,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:14:40,088 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:14:40,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 17:14:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:40,288 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:14:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:14:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash 415693629, now seen corresponding path program 5 times [2022-12-13 17:14:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:14:40,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702634653] [2022-12-13 17:14:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:14:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:14:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:14:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:40,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:14:40,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702634653] [2022-12-13 17:14:40,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702634653] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:14:40,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674492868] [2022-12-13 17:14:40,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:14:40,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:14:40,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:14:40,336 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:14:40,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:14:40,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 17:14:40,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:14:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:14:40,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:14:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:14:40,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:14:40,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674492868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:14:40,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:14:40,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2022-12-13 17:14:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546118283] [2022-12-13 17:14:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:14:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:14:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:14:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:14:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:14:40,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2022-12-13 17:14:40,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 405 transitions, 8186 flow. Second operand has 8 states, 8 states have (on average 105.75) internal successors, (846), 8 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 17:14:40,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:14:40,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2022-12-13 17:14:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:14:52,532 INFO L130 PetriNetUnfolder]: 43297/64848 cut-off events. [2022-12-13 17:14:52,532 INFO L131 PetriNetUnfolder]: For 2220797/2220797 co-relation queries the response was YES. [2022-12-13 17:14:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533235 conditions, 64848 events. 43297/64848 cut-off events. For 2220797/2220797 co-relation queries the response was YES. Maximal size of possible extension queue 1906. Compared 488263 event pairs, 2544 based on Foata normal form. 1884/66732 useless extension candidates. Maximal degree in co-relation 533150. Up to 30956 conditions per place. [2022-12-13 17:14:53,527 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 553 selfloop transitions, 247 changer transitions 0/800 dead transitions. [2022-12-13 17:14:53,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 800 transitions, 17227 flow [2022-12-13 17:14:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:14:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:14:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 912 transitions. [2022-12-13 17:14:53,528 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2022-12-13 17:14:53,528 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 912 transitions. [2022-12-13 17:14:53,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 912 transitions. [2022-12-13 17:14:53,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:14:53,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 912 transitions. [2022-12-13 17:14:53,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 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 17:14:53,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 17:14:53,531 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 17:14:53,531 INFO L175 Difference]: Start difference. First operand has 197 places, 405 transitions, 8186 flow. Second operand 8 states and 912 transitions. [2022-12-13 17:14:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 800 transitions, 17227 flow [2022-12-13 17:15:26,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 800 transitions, 16132 flow, removed 506 selfloop flow, removed 9 redundant places. [2022-12-13 17:15:26,509 INFO L231 Difference]: Finished difference. Result has 196 places, 449 transitions, 9178 flow [2022-12-13 17:15:26,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7201, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9178, PETRI_PLACES=196, PETRI_TRANSITIONS=449} [2022-12-13 17:15:26,509 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2022-12-13 17:15:26,509 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 449 transitions, 9178 flow [2022-12-13 17:15:26,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.75) internal successors, (846), 8 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 17:15:26,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:15:26,510 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:15:26,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 17:15:26,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 17:15:26,711 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:15:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:15:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 272547874, now seen corresponding path program 6 times [2022-12-13 17:15:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:15:26,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030349207] [2022-12-13 17:15:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:15:26,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:15:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:15:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:26,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:15:26,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030349207] [2022-12-13 17:15:26,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030349207] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:15:26,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165689228] [2022-12-13 17:15:26,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 17:15:26,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:15:26,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:15:26,826 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:15:26,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:15:26,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 17:15:26,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:15:26,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:15:26,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:15:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:26,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:15:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:15:27,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165689228] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:15:27,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:15:27,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 17:15:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896298075] [2022-12-13 17:15:27,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:15:27,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:15:27,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:15:27,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:15:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:15:27,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:15:27,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 449 transitions, 9178 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 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 17:15:27,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:15:27,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:15:27,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:15:44,895 INFO L130 PetriNetUnfolder]: 57168/86634 cut-off events. [2022-12-13 17:15:44,895 INFO L131 PetriNetUnfolder]: For 3387191/3387191 co-relation queries the response was YES. [2022-12-13 17:15:45,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686787 conditions, 86634 events. 57168/86634 cut-off events. For 3387191/3387191 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 682598 event pairs, 3795 based on Foata normal form. 1343/87977 useless extension candidates. Maximal degree in co-relation 686703. Up to 33419 conditions per place. [2022-12-13 17:15:45,951 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 746 selfloop transitions, 433 changer transitions 0/1179 dead transitions. [2022-12-13 17:15:45,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1179 transitions, 19505 flow [2022-12-13 17:15:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 17:15:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-13 17:15:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3693 transitions. [2022-12-13 17:15:45,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4762088974854932 [2022-12-13 17:15:45,955 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3693 transitions. [2022-12-13 17:15:45,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3693 transitions. [2022-12-13 17:15:45,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:15:45,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3693 transitions. [2022-12-13 17:15:45,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 111.9090909090909) internal successors, (3693), 33 states have internal predecessors, (3693), 0 states have call successors, (0), 0 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 17:15:45,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 235.0) internal successors, (7990), 34 states have internal predecessors, (7990), 0 states have call successors, (0), 0 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 17:15:45,965 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 235.0) internal successors, (7990), 34 states have internal predecessors, (7990), 0 states have call successors, (0), 0 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 17:15:45,965 INFO L175 Difference]: Start difference. First operand has 196 places, 449 transitions, 9178 flow. Second operand 33 states and 3693 transitions. [2022-12-13 17:15:45,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1179 transitions, 19505 flow [2022-12-13 17:16:37,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 1179 transitions, 18698 flow, removed 391 selfloop flow, removed 3 redundant places. [2022-12-13 17:16:37,295 INFO L231 Difference]: Finished difference. Result has 236 places, 618 transitions, 13542 flow [2022-12-13 17:16:37,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8681, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=13542, PETRI_PLACES=236, PETRI_TRANSITIONS=618} [2022-12-13 17:16:37,296 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2022-12-13 17:16:37,296 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 618 transitions, 13542 flow [2022-12-13 17:16:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 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 17:16:37,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:37,296 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:37,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 17:16:37,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 17:16:37,497 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash 286953981, now seen corresponding path program 7 times [2022-12-13 17:16:37,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:37,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703190913] [2022-12-13 17:16:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703190913] [2022-12-13 17:16:37,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703190913] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:37,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160511295] [2022-12-13 17:16:37,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 17:16:37,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:37,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:37,555 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:37,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:16:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:37,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:16:37,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:37,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:16:37,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160511295] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:37,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:16:37,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2022-12-13 17:16:37,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536586632] [2022-12-13 17:16:37,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:37,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:16:37,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:16:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:16:37,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2022-12-13 17:16:37,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 618 transitions, 13542 flow. Second operand has 8 states, 8 states have (on average 105.75) internal successors, (846), 8 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 17:16:37,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:37,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2022-12-13 17:16:37,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:57,179 INFO L130 PetriNetUnfolder]: 57582/87990 cut-off events. [2022-12-13 17:16:57,179 INFO L131 PetriNetUnfolder]: For 3053660/3053660 co-relation queries the response was YES. [2022-12-13 17:16:58,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677780 conditions, 87990 events. 57582/87990 cut-off events. For 3053660/3053660 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 712952 event pairs, 2685 based on Foata normal form. 4327/92317 useless extension candidates. Maximal degree in co-relation 677686. Up to 52944 conditions per place. [2022-12-13 17:16:58,274 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 602 selfloop transitions, 275 changer transitions 94/971 dead transitions. [2022-12-13 17:16:58,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 971 transitions, 22409 flow [2022-12-13 17:16:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:16:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:16:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 895 transitions. [2022-12-13 17:16:58,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47606382978723405 [2022-12-13 17:16:58,276 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 895 transitions. [2022-12-13 17:16:58,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 895 transitions. [2022-12-13 17:16:58,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:58,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 895 transitions. [2022-12-13 17:16:58,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.875) internal successors, (895), 8 states have internal predecessors, (895), 0 states have call successors, (0), 0 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 17:16:58,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 17:16:58,278 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 17:16:58,279 INFO L175 Difference]: Start difference. First operand has 236 places, 618 transitions, 13542 flow. Second operand 8 states and 895 transitions. [2022-12-13 17:16:58,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 971 transitions, 22409 flow [2022-12-13 17:18:10,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 971 transitions, 21384 flow, removed 464 selfloop flow, removed 10 redundant places. [2022-12-13 17:18:10,796 INFO L231 Difference]: Finished difference. Result has 234 places, 571 transitions, 12638 flow [2022-12-13 17:18:10,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=12011, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12638, PETRI_PLACES=234, PETRI_TRANSITIONS=571} [2022-12-13 17:18:10,797 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2022-12-13 17:18:10,797 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 571 transitions, 12638 flow [2022-12-13 17:18:10,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.75) internal successors, (846), 8 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 17:18:10,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:10,797 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:18:10,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 17:18:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 17:18:10,998 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:18:10,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash 286953978, now seen corresponding path program 2 times [2022-12-13 17:18:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:11,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389873947] [2022-12-13 17:18:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:11,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:11,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389873947] [2022-12-13 17:18:11,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389873947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:18:11,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75380191] [2022-12-13 17:18:11,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:18:11,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:11,108 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:11,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:18:11,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:18:11,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:11,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:18:11,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:11,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:11,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75380191] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:11,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:18:11,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 17:18:11,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695867235] [2022-12-13 17:18:11,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:11,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:18:11,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:18:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:18:11,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:18:11,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 571 transitions, 12638 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 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 17:18:11,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:11,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:18:11,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:34,644 INFO L130 PetriNetUnfolder]: 65335/102122 cut-off events. [2022-12-13 17:18:34,645 INFO L131 PetriNetUnfolder]: For 3767371/3767371 co-relation queries the response was YES. [2022-12-13 17:18:35,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760506 conditions, 102122 events. 65335/102122 cut-off events. For 3767371/3767371 co-relation queries the response was YES. Maximal size of possible extension queue 3306. Compared 871869 event pairs, 3880 based on Foata normal form. 1256/103378 useless extension candidates. Maximal degree in co-relation 760410. Up to 34718 conditions per place. [2022-12-13 17:18:35,990 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 691 selfloop transitions, 478 changer transitions 45/1214 dead transitions. [2022-12-13 17:18:35,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1214 transitions, 21971 flow [2022-12-13 17:18:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 17:18:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 17:18:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3244 transitions. [2022-12-13 17:18:35,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.476008804108584 [2022-12-13 17:18:35,995 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3244 transitions. [2022-12-13 17:18:35,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3244 transitions. [2022-12-13 17:18:35,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:35,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3244 transitions. [2022-12-13 17:18:36,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 111.86206896551724) internal successors, (3244), 29 states have internal predecessors, (3244), 0 states have call successors, (0), 0 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 17:18:36,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 235.0) internal successors, (7050), 30 states have internal predecessors, (7050), 0 states have call successors, (0), 0 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 17:18:36,008 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 235.0) internal successors, (7050), 30 states have internal predecessors, (7050), 0 states have call successors, (0), 0 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 17:18:36,008 INFO L175 Difference]: Start difference. First operand has 234 places, 571 transitions, 12638 flow. Second operand 29 states and 3244 transitions. [2022-12-13 17:18:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 1214 transitions, 21971 flow [2022-12-13 17:20:15,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1214 transitions, 21136 flow, removed 409 selfloop flow, removed 3 redundant places. [2022-12-13 17:20:15,677 INFO L231 Difference]: Finished difference. Result has 268 places, 649 transitions, 15378 flow [2022-12-13 17:20:15,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=12059, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15378, PETRI_PLACES=268, PETRI_TRANSITIONS=649} [2022-12-13 17:20:15,678 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2022-12-13 17:20:15,678 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 649 transitions, 15378 flow [2022-12-13 17:20:15,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 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 17:20:15,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:20:15,679 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:20:15,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 17:20:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 17:20:15,880 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:20:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:20:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash 120947966, now seen corresponding path program 3 times [2022-12-13 17:20:15,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:20:15,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136266302] [2022-12-13 17:20:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:20:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:20:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:20:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:20:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:20:15,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136266302] [2022-12-13 17:20:15,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136266302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:20:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564117553] [2022-12-13 17:20:15,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:20:15,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:20:15,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:20:15,989 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:20:15,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 17:20:16,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 17:20:16,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:20:16,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:20:16,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:20:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:20:16,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:20:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:20:16,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564117553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:20:16,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:20:16,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 17:20:16,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886942048] [2022-12-13 17:20:16,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:20:16,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:20:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:20:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:20:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:20:16,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:20:16,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 649 transitions, 15378 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 17:20:16,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:20:16,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:20:16,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:20:43,442 INFO L130 PetriNetUnfolder]: 67508/106684 cut-off events. [2022-12-13 17:20:43,443 INFO L131 PetriNetUnfolder]: For 3582183/3582183 co-relation queries the response was YES. [2022-12-13 17:20:44,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800574 conditions, 106684 events. 67508/106684 cut-off events. For 3582183/3582183 co-relation queries the response was YES. Maximal size of possible extension queue 3531. Compared 931980 event pairs, 6080 based on Foata normal form. 664/107348 useless extension candidates. Maximal degree in co-relation 800470. Up to 53257 conditions per place. [2022-12-13 17:20:45,129 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 747 selfloop transitions, 364 changer transitions 33/1144 dead transitions. [2022-12-13 17:20:45,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 1144 transitions, 22005 flow [2022-12-13 17:20:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:20:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 17:20:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2904 transitions. [2022-12-13 17:20:45,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47528641571194763 [2022-12-13 17:20:45,135 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2904 transitions. [2022-12-13 17:20:45,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2904 transitions. [2022-12-13 17:20:45,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:20:45,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2904 transitions. [2022-12-13 17:20:45,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 111.6923076923077) internal successors, (2904), 26 states have internal predecessors, (2904), 0 states have call successors, (0), 0 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 17:20:45,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 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 17:20:45,143 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 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 17:20:45,143 INFO L175 Difference]: Start difference. First operand has 268 places, 649 transitions, 15378 flow. Second operand 26 states and 2904 transitions. [2022-12-13 17:20:45,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 1144 transitions, 22005 flow [2022-12-13 17:23:05,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1144 transitions, 21482 flow, removed 236 selfloop flow, removed 8 redundant places. [2022-12-13 17:23:05,263 INFO L231 Difference]: Finished difference. Result has 296 places, 657 transitions, 16412 flow [2022-12-13 17:23:05,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=14871, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=16412, PETRI_PLACES=296, PETRI_TRANSITIONS=657} [2022-12-13 17:23:05,263 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 267 predicate places. [2022-12-13 17:23:05,263 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 657 transitions, 16412 flow [2022-12-13 17:23:05,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 17:23:05,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:23:05,264 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:23:05,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 17:23:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 17:23:05,465 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:23:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:23:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash -160126330, now seen corresponding path program 8 times [2022-12-13 17:23:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:23:05,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878556276] [2022-12-13 17:23:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:23:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:23:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:23:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:23:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:23:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878556276] [2022-12-13 17:23:05,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878556276] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:23:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242593611] [2022-12-13 17:23:05,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:23:05,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:23:05,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:23:05,566 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:23:05,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 17:23:05,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:23:05,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:23:05,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:23:05,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:23:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:23:05,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:23:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:23:05,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242593611] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:23:05,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:23:05,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 17:23:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209574395] [2022-12-13 17:23:05,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:23:05,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:23:05,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:23:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:23:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:23:05,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:23:05,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 657 transitions, 16412 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 17:23:05,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:23:05,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:23:05,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:23:43,963 INFO L130 PetriNetUnfolder]: 82986/132839 cut-off events. [2022-12-13 17:23:43,963 INFO L131 PetriNetUnfolder]: For 5330858/5330858 co-relation queries the response was YES. [2022-12-13 17:23:45,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993005 conditions, 132839 events. 82986/132839 cut-off events. For 5330858/5330858 co-relation queries the response was YES. Maximal size of possible extension queue 4527. Compared 1211767 event pairs, 4007 based on Foata normal form. 1190/134029 useless extension candidates. Maximal degree in co-relation 992889. Up to 40027 conditions per place. [2022-12-13 17:23:46,077 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 725 selfloop transitions, 652 changer transitions 89/1466 dead transitions. [2022-12-13 17:23:46,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 1466 transitions, 28319 flow [2022-12-13 17:23:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 17:23:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 17:23:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3916 transitions. [2022-12-13 17:23:46,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47610942249240124 [2022-12-13 17:23:46,082 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3916 transitions. [2022-12-13 17:23:46,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3916 transitions. [2022-12-13 17:23:46,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:23:46,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3916 transitions. [2022-12-13 17:23:46,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 111.88571428571429) internal successors, (3916), 35 states have internal predecessors, (3916), 0 states have call successors, (0), 0 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 17:23:46,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 235.0) internal successors, (8460), 36 states have internal predecessors, (8460), 0 states have call successors, (0), 0 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 17:23:46,091 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 235.0) internal successors, (8460), 36 states have internal predecessors, (8460), 0 states have call successors, (0), 0 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 17:23:46,091 INFO L175 Difference]: Start difference. First operand has 296 places, 657 transitions, 16412 flow. Second operand 35 states and 3916 transitions. [2022-12-13 17:23:46,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 1466 transitions, 28319 flow [2022-12-13 17:27:10,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1466 transitions, 27691 flow, removed 268 selfloop flow, removed 11 redundant places. [2022-12-13 17:27:10,081 INFO L231 Difference]: Finished difference. Result has 331 places, 742 transitions, 20146 flow [2022-12-13 17:27:10,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=15882, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=20146, PETRI_PLACES=331, PETRI_TRANSITIONS=742} [2022-12-13 17:27:10,081 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 302 predicate places. [2022-12-13 17:27:10,081 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 742 transitions, 20146 flow [2022-12-13 17:27:10,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 17:27:10,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:27:10,082 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:10,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 17:27:10,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 17:27:10,283 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:27:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash 429911302, now seen corresponding path program 9 times [2022-12-13 17:27:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036287093] [2022-12-13 17:27:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036287093] [2022-12-13 17:27:10,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036287093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528530994] [2022-12-13 17:27:10,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:27:10,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:10,405 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:10,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62fcfb0-dadc-408f-b83b-27ffdbeb7e17/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 17:27:10,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 17:27:10,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:27:10,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:27:10,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:10,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:27:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:10,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528530994] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:27:10,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:27:10,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 17:27:10,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207176797] [2022-12-13 17:27:10,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:27:10,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:27:10,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:27:10,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:27:10,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:27:10,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 742 transitions, 20146 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 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 17:27:10,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:27:10,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:27:10,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand