./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --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_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/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_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/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_c39e9a9c-c1f0-4951-8d72-72a3762babc1/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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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 22:02:20,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:02:20,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:02:20,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:02:20,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:02:20,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:02:20,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:02:20,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:02:20,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:02:20,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:02:20,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:02:20,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:02:20,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:02:20,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:02:20,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:02:20,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:02:20,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:02:20,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:02:20,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:02:20,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:02:20,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:02:20,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:02:20,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:02:20,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:02:20,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:02:20,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:02:20,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:02:20,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:02:20,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:02:20,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:02:20,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:02:20,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:02:20,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:02:20,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:02:20,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:02:20,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:02:20,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:02:20,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:02:20,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:02:20,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:02:20,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:02:20,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 22:02:20,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:02:20,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:02:20,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:02:20,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:02:20,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:02:20,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:02:20,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:02:20,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:02:20,715 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:02:20,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:02:20,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 22:02:20,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:02:20,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:02:20,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:02:20,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:02:20,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:02:20,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:02:20,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:02:20,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:02:20,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:02:20,718 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:02:20,719 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_c39e9a9c-c1f0-4951-8d72-72a3762babc1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-12-13 22:02:20,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:02:20,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:02:20,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:02:20,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:02:20,908 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:02:20,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-13 22:02:23,499 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:02:23,620 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:02:23,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-13 22:02:23,625 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/data/291a3ffee/b430aa8f60064ea5b7f5485686283a41/FLAGdb4bcd5fd [2022-12-13 22:02:23,635 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/data/291a3ffee/b430aa8f60064ea5b7f5485686283a41 [2022-12-13 22:02:23,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:02:23,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:02:23,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:02:23,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:02:23,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:02:23,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e39c384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23, skipping insertion in model container [2022-12-13 22:02:23,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:02:23,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:02:23,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,838 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_c39e9a9c-c1f0-4951-8d72-72a3762babc1/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-13 22:02:23,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:02:23,854 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:02:23,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:02:23,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:02:23,887 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_c39e9a9c-c1f0-4951-8d72-72a3762babc1/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-13 22:02:23,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:02:23,903 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:02:23,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23 WrapperNode [2022-12-13 22:02:23,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:02:23,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:02:23,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:02:23,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:02:23,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,946 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 184 [2022-12-13 22:02:23,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:02:23,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:02:23,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:02:23,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:02:23,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:02:23,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:02:23,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:02:23,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:02:23,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (1/1) ... [2022-12-13 22:02:23,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:02:24,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:02:24,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:02:24,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:02:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:02:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:02:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:02:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:02:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:02:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:02:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:02:24,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:02:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 22:02:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 22:02:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 22:02:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 22:02:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:02:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 22:02:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 22:02:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:02:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:02:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:02:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:02:24,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:02:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:02:24,056 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 22:02:24,156 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:02:24,158 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:02:24,495 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:02:24,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:02:24,600 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 22:02:24,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:02:24 BoogieIcfgContainer [2022-12-13 22:02:24,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:02:24,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:02:24,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:02:24,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:02:24,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:02:23" (1/3) ... [2022-12-13 22:02:24,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2ef57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:02:24, skipping insertion in model container [2022-12-13 22:02:24,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:02:23" (2/3) ... [2022-12-13 22:02:24,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2ef57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:02:24, skipping insertion in model container [2022-12-13 22:02:24,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:02:24" (3/3) ... [2022-12-13 22:02:24,608 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-12-13 22:02:24,614 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:02:24,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:02:24,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 22:02:24,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:02:24,687 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 22:02:24,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 220 transitions, 480 flow [2022-12-13 22:02:24,770 INFO L130 PetriNetUnfolder]: 14/215 cut-off events. [2022-12-13 22:02:24,770 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 22:02:24,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 215 events. 14/215 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-12-13 22:02:24,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 220 transitions, 480 flow [2022-12-13 22:02:24,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 190 transitions, 407 flow [2022-12-13 22:02:24,781 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:02:24,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 190 transitions, 407 flow [2022-12-13 22:02:24,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 190 transitions, 407 flow [2022-12-13 22:02:24,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 190 transitions, 407 flow [2022-12-13 22:02:24,818 INFO L130 PetriNetUnfolder]: 13/190 cut-off events. [2022-12-13 22:02:24,819 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:02:24,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 190 events. 13/190 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 238 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-12-13 22:02:24,822 INFO L119 LiptonReduction]: Number of co-enabled transitions 6742 [2022-12-13 22:02:33,063 INFO L134 LiptonReduction]: Checked pairs total: 10642 [2022-12-13 22:02:33,063 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-12-13 22:02:33,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:02:33,078 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;@3c04bdc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:02:33,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-13 22:02:33,080 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 22:02:33,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:02:33,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:02:33,080 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 22:02:33,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:02:33,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:02:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 30115, now seen corresponding path program 1 times [2022-12-13 22:02:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:02:33,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758417848] [2022-12-13 22:02:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:02:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:33,289 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 22:02:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:02:33,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758417848] [2022-12-13 22:02:33,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758417848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:02:33,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:02:33,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:02:33,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13463315] [2022-12-13 22:02:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:02:33,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:02:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:02:33,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:02:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:02:33,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 405 [2022-12-13 22:02:33,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:33,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:02:33,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 405 [2022-12-13 22:02:33,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:02:44,465 INFO L130 PetriNetUnfolder]: 127499/152381 cut-off events. [2022-12-13 22:02:44,465 INFO L131 PetriNetUnfolder]: For 2128/2128 co-relation queries the response was YES. [2022-12-13 22:02:44,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312075 conditions, 152381 events. 127499/152381 cut-off events. For 2128/2128 co-relation queries the response was YES. Maximal size of possible extension queue 7377. Compared 757772 event pairs, 81828 based on Foata normal form. 0/61413 useless extension candidates. Maximal degree in co-relation 137274. Up to 75959 conditions per place. [2022-12-13 22:02:45,253 INFO L137 encePairwiseOnDemand]: 398/405 looper letters, 89 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2022-12-13 22:02:45,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 422 flow [2022-12-13 22:02:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:02:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:02:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2022-12-13 22:02:45,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5358024691358024 [2022-12-13 22:02:45,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2022-12-13 22:02:45,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2022-12-13 22:02:45,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:02:45,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2022-12-13 22:02:45,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:45,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:45,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:45,283 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 131 flow. Second operand 3 states and 651 transitions. [2022-12-13 22:02:45,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 422 flow [2022-12-13 22:02:47,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-13 22:02:47,158 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 122 flow [2022-12-13 22:02:47,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-12-13 22:02:47,162 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2022-12-13 22:02:47,162 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 122 flow [2022-12-13 22:02:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:47,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:02:47,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:02:47,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:02:47,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:02:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:02:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash 934943, now seen corresponding path program 1 times [2022-12-13 22:02:47,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:02:47,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512081618] [2022-12-13 22:02:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:02:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:47,240 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 22:02:47,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:02:47,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512081618] [2022-12-13 22:02:47,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512081618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:02:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86170478] [2022-12-13 22:02:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:47,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:02:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:02:47,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:02:47,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:02:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:47,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:02:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:02:47,342 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 22:02:47,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:02:47,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86170478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:02:47,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:02:47,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 22:02:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241140232] [2022-12-13 22:02:47,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:02:47,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:02:47,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:02:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:02:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:02:47,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 405 [2022-12-13 22:02:47,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:47,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:02:47,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 405 [2022-12-13 22:02:47,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:02:57,650 INFO L130 PetriNetUnfolder]: 127499/152380 cut-off events. [2022-12-13 22:02:57,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:02:57,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310003 conditions, 152380 events. 127499/152380 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7377. Compared 759409 event pairs, 81828 based on Foata normal form. 0/61415 useless extension candidates. Maximal degree in co-relation 154999. Up to 75957 conditions per place. [2022-12-13 22:02:58,233 INFO L137 encePairwiseOnDemand]: 402/405 looper letters, 88 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-12-13 22:02:58,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 92 transitions, 394 flow [2022-12-13 22:02:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:02:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:02:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 827 transitions. [2022-12-13 22:02:58,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104938271604939 [2022-12-13 22:02:58,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 827 transitions. [2022-12-13 22:02:58,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 827 transitions. [2022-12-13 22:02:58,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:02:58,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 827 transitions. [2022-12-13 22:02:58,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:58,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 405.0) internal successors, (2025), 5 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:58,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 405.0) internal successors, (2025), 5 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:58,243 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 122 flow. Second operand 4 states and 827 transitions. [2022-12-13 22:02:58,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 92 transitions, 394 flow [2022-12-13 22:02:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:02:58,245 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 120 flow [2022-12-13 22:02:58,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-12-13 22:02:58,245 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2022-12-13 22:02:58,246 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 120 flow [2022-12-13 22:02:58,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:58,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:02:58,246 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:02:58,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:02:58,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:02:58,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:02:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:02:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash 934942, now seen corresponding path program 1 times [2022-12-13 22:02:58,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:02:58,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499414600] [2022-12-13 22:02:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:02:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:58,524 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 22:02:58,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:02:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499414600] [2022-12-13 22:02:58,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499414600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:02:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539057045] [2022-12-13 22:02:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:02:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:02:58,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:02:58,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:02:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:58,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:02:58,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:02:58,603 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 22:02:58,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:02:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:02:58,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539057045] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:02:58,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:02:58,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 22:02:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038627275] [2022-12-13 22:02:58,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:02:58,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:02:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:02:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:02:58,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:02:58,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 405 [2022-12-13 22:02:58,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 185.14285714285714) internal successors, (1296), 7 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:58,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:02:58,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 405 [2022-12-13 22:02:58,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:21,795 INFO L130 PetriNetUnfolder]: 318746/380947 cut-off events. [2022-12-13 22:03:21,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:03:22,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774992 conditions, 380947 events. 318746/380947 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16365. Compared 2045813 event pairs, 204570 based on Foata normal form. 0/153563 useless extension candidates. Maximal degree in co-relation 619987. Up to 75958 conditions per place. [2022-12-13 22:03:23,325 INFO L137 encePairwiseOnDemand]: 402/405 looper letters, 217 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2022-12-13 22:03:23,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 224 transitions, 960 flow [2022-12-13 22:03:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:03:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:03:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1329 transitions. [2022-12-13 22:03:23,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5469135802469136 [2022-12-13 22:03:23,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1329 transitions. [2022-12-13 22:03:23,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1329 transitions. [2022-12-13 22:03:23,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:23,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1329 transitions. [2022-12-13 22:03:23,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.5) internal successors, (1329), 6 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:23,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 405.0) internal successors, (2835), 7 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:23,338 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 405.0) internal successors, (2835), 7 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:23,338 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 120 flow. Second operand 6 states and 1329 transitions. [2022-12-13 22:03:23,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 224 transitions, 960 flow [2022-12-13 22:03:23,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 224 transitions, 957 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:03:23,342 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 153 flow [2022-12-13 22:03:23,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2022-12-13 22:03:23,343 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2022-12-13 22:03:23,343 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 153 flow [2022-12-13 22:03:23,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 185.14285714285714) internal successors, (1296), 7 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:23,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:23,345 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 22:03:23,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 22:03:23,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:03:23,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:03:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2084451490, now seen corresponding path program 2 times [2022-12-13 22:03:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:23,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706214400] [2022-12-13 22:03:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:23,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:23,671 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 22:03:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706214400] [2022-12-13 22:03:23,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706214400] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:03:23,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718806644] [2022-12-13 22:03:23,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:03:23,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:03:23,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:03:23,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:03:23,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:03:23,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:03:23,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:03:23,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:03:23,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:03:23,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:03:23,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718806644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:23,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:03:23,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 22:03:23,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715144188] [2022-12-13 22:03:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:23,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:03:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:03:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:23,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2022-12-13 22:03:23,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:23,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:23,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2022-12-13 22:03:23,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:48,184 INFO L130 PetriNetUnfolder]: 318746/380946 cut-off events. [2022-12-13 22:03:48,184 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 22:03:48,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775000 conditions, 380946 events. 318746/380946 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16320. Compared 2047120 event pairs, 204570 based on Foata normal form. 1/153492 useless extension candidates. Maximal degree in co-relation 619991. Up to 379776 conditions per place. [2022-12-13 22:03:49,878 INFO L137 encePairwiseOnDemand]: 403/405 looper letters, 48 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-12-13 22:03:49,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 241 flow [2022-12-13 22:03:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:03:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:03:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2022-12-13 22:03:49,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49465020576131685 [2022-12-13 22:03:49,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2022-12-13 22:03:49,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2022-12-13 22:03:49,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:49,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2022-12-13 22:03:49,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:49,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:49,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:49,885 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 153 flow. Second operand 3 states and 601 transitions. [2022-12-13 22:03:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 241 flow [2022-12-13 22:03:49,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 223 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 22:03:49,887 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 127 flow [2022-12-13 22:03:49,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2022-12-13 22:03:49,888 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2022-12-13 22:03:49,888 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 127 flow [2022-12-13 22:03:49,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:49,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:49,889 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 22:03:49,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:03:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:03:50,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:03:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2077798607, now seen corresponding path program 1 times [2022-12-13 22:03:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:50,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553508829] [2022-12-13 22:03:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:50,157 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 22:03:50,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:50,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553508829] [2022-12-13 22:03:50,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553508829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:50,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:50,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:03:50,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709982930] [2022-12-13 22:03:50,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:50,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:03:50,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:03:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:03:50,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2022-12-13 22:03:50,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:50,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:50,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2022-12-13 22:03:50,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:23,657 INFO L130 PetriNetUnfolder]: 453441/541551 cut-off events. [2022-12-13 22:04:23,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:04:24,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100994 conditions, 541551 events. 453441/541551 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21803. Compared 3039863 event pairs, 204885 based on Foata normal form. 0/218151 useless extension candidates. Maximal degree in co-relation 1100986. Up to 380332 conditions per place. [2022-12-13 22:04:26,047 INFO L137 encePairwiseOnDemand]: 401/405 looper letters, 84 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2022-12-13 22:04:26,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 88 transitions, 382 flow [2022-12-13 22:04:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:04:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:04:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2022-12-13 22:04:26,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2022-12-13 22:04:26,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2022-12-13 22:04:26,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2022-12-13 22:04:26,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:26,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2022-12-13 22:04:26,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:26,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:26,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:26,055 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 127 flow. Second operand 3 states and 639 transitions. [2022-12-13 22:04:26,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 88 transitions, 382 flow [2022-12-13 22:04:26,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:04:26,057 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 140 flow [2022-12-13 22:04:26,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2022-12-13 22:04:26,057 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2022-12-13 22:04:26,057 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 140 flow [2022-12-13 22:04:26,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:26,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:26,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:26,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:04:26,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:04:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash -12751809, now seen corresponding path program 1 times [2022-12-13 22:04:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:26,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51449086] [2022-12-13 22:04:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:04:26,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:26,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51449086] [2022-12-13 22:04:26,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51449086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:26,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:26,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:04:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575084434] [2022-12-13 22:04:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:26,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:04:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:04:26,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:04:26,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 405 [2022-12-13 22:04:26,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:26,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:26,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 405 [2022-12-13 22:04:26,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:55,878 INFO L130 PetriNetUnfolder]: 359981/430470 cut-off events. [2022-12-13 22:04:55,878 INFO L131 PetriNetUnfolder]: For 35448/35448 co-relation queries the response was YES. [2022-12-13 22:04:56,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917533 conditions, 430470 events. 359981/430470 cut-off events. For 35448/35448 co-relation queries the response was YES. Maximal size of possible extension queue 18203. Compared 2343517 event pairs, 233080 based on Foata normal form. 1/187943 useless extension candidates. Maximal degree in co-relation 917524. Up to 429246 conditions per place. [2022-12-13 22:04:57,922 INFO L137 encePairwiseOnDemand]: 402/405 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 22:04:57,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 240 flow [2022-12-13 22:04:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:04:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:04:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2022-12-13 22:04:57,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48559670781893005 [2022-12-13 22:04:57,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2022-12-13 22:04:57,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2022-12-13 22:04:57,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:57,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2022-12-13 22:04:57,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:57,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:57,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:57,927 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 140 flow. Second operand 3 states and 590 transitions. [2022-12-13 22:04:57,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 240 flow [2022-12-13 22:04:57,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 22:04:57,954 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 144 flow [2022-12-13 22:04:57,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2022-12-13 22:04:57,955 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2022-12-13 22:04:57,955 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 144 flow [2022-12-13 22:04:57,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:57,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:57,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:04:57,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:04:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1496927043, now seen corresponding path program 1 times [2022-12-13 22:04:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476236635] [2022-12-13 22:04:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:04:58,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:58,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476236635] [2022-12-13 22:04:58,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476236635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:04:58,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375449686] [2022-12-13 22:04:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:58,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:04:58,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:04:58,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:04:58,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:04:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:58,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:04:58,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:58,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:58,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375449686] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:58,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:04:58,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-12-13 22:04:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554538690] [2022-12-13 22:04:58,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:58,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:04:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:04:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:04:58,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 405 [2022-12-13 22:04:58,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:58,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:58,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 405 [2022-12-13 22:04:58,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:05:21,049 INFO L130 PetriNetUnfolder]: 278885/334556 cut-off events. [2022-12-13 22:05:21,050 INFO L131 PetriNetUnfolder]: For 6496/6496 co-relation queries the response was YES. [2022-12-13 22:05:21,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704254 conditions, 334556 events. 278885/334556 cut-off events. For 6496/6496 co-relation queries the response was YES. Maximal size of possible extension queue 13619. Compared 1890214 event pairs, 38817 based on Foata normal form. 1062/157138 useless extension candidates. Maximal degree in co-relation 704243. Up to 74658 conditions per place. [2022-12-13 22:05:22,816 INFO L137 encePairwiseOnDemand]: 394/405 looper letters, 271 selfloop transitions, 11 changer transitions 0/284 dead transitions. [2022-12-13 22:05:22,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 284 transitions, 1229 flow [2022-12-13 22:05:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:05:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:05:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2399 transitions. [2022-12-13 22:05:22,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49362139917695474 [2022-12-13 22:05:22,822 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2399 transitions. [2022-12-13 22:05:22,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2399 transitions. [2022-12-13 22:05:22,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:05:22,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2399 transitions. [2022-12-13 22:05:22,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 199.91666666666666) internal successors, (2399), 12 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:22,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 405.0) internal successors, (5265), 13 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:22,831 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 405.0) internal successors, (5265), 13 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:22,832 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 144 flow. Second operand 12 states and 2399 transitions. [2022-12-13 22:05:22,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 284 transitions, 1229 flow [2022-12-13 22:05:22,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 284 transitions, 1225 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:05:22,854 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 225 flow [2022-12-13 22:05:22,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=225, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2022-12-13 22:05:22,854 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2022-12-13 22:05:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 225 flow [2022-12-13 22:05:22,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:22,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:05:22,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:05:22,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:05:23,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 22:05:23,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:05:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:05:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash -620253921, now seen corresponding path program 1 times [2022-12-13 22:05:23,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:05:23,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807383403] [2022-12-13 22:05:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:05:23,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:05:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:05:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:05:23,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:05:23,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807383403] [2022-12-13 22:05:23,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807383403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:05:23,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:05:23,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:05:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587674040] [2022-12-13 22:05:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:05:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:05:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:05:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:05:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:05:23,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2022-12-13 22:05:23,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:23,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:05:23,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2022-12-13 22:05:23,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:05:56,162 INFO L130 PetriNetUnfolder]: 375697/451708 cut-off events. [2022-12-13 22:05:56,162 INFO L131 PetriNetUnfolder]: For 725088/725097 co-relation queries the response was YES. [2022-12-13 22:05:57,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192179 conditions, 451708 events. 375697/451708 cut-off events. For 725088/725097 co-relation queries the response was YES. Maximal size of possible extension queue 17653. Compared 2555707 event pairs, 177359 based on Foata normal form. 6084/254528 useless extension candidates. Maximal degree in co-relation 1192162. Up to 329453 conditions per place. [2022-12-13 22:05:58,806 INFO L137 encePairwiseOnDemand]: 401/405 looper letters, 93 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2022-12-13 22:05:58,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 562 flow [2022-12-13 22:05:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:05:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:05:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2022-12-13 22:05:58,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522633744855967 [2022-12-13 22:05:58,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2022-12-13 22:05:58,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2022-12-13 22:05:58,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:05:58,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2022-12-13 22:05:58,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:58,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:58,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:58,812 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 225 flow. Second operand 3 states and 635 transitions. [2022-12-13 22:05:58,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 562 flow [2022-12-13 22:05:59,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 538 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 22:05:59,815 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 223 flow [2022-12-13 22:05:59,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2022-12-13 22:05:59,815 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2022-12-13 22:05:59,815 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 223 flow [2022-12-13 22:05:59,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:05:59,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:05:59,816 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:05:59,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:05:59,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:05:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:05:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1052331231, now seen corresponding path program 1 times [2022-12-13 22:05:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:05:59,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703953244] [2022-12-13 22:05:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:05:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:05:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:06:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:06:00,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:06:00,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703953244] [2022-12-13 22:06:00,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703953244] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:06:00,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962214972] [2022-12-13 22:06:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:06:00,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:06:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:06:00,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:06:00,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:06:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:06:00,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:06:00,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:06:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:06:00,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:06:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:06:00,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962214972] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:06:00,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:06:00,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 22:06:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571693508] [2022-12-13 22:06:00,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:06:00,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:06:00,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:06:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:06:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:06:00,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2022-12-13 22:06:00,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 186.85714285714286) internal successors, (1308), 7 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:06:00,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:06:00,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2022-12-13 22:06:00,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:07:08,726 INFO L130 PetriNetUnfolder]: 706429/846160 cut-off events. [2022-12-13 22:07:08,726 INFO L131 PetriNetUnfolder]: For 1456616/1457324 co-relation queries the response was YES. [2022-12-13 22:07:10,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382235 conditions, 846160 events. 706429/846160 cut-off events. For 1456616/1457324 co-relation queries the response was YES. Maximal size of possible extension queue 28568. Compared 5024202 event pairs, 151087 based on Foata normal form. 76/510992 useless extension candidates. Maximal degree in co-relation 2382217. Up to 281363 conditions per place. [2022-12-13 22:07:14,131 INFO L137 encePairwiseOnDemand]: 402/405 looper letters, 199 selfloop transitions, 7 changer transitions 0/208 dead transitions. [2022-12-13 22:07:14,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 208 transitions, 1157 flow [2022-12-13 22:07:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:07:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:07:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1305 transitions. [2022-12-13 22:07:14,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2022-12-13 22:07:14,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1305 transitions. [2022-12-13 22:07:14,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1305 transitions. [2022-12-13 22:07:14,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:07:14,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1305 transitions. [2022-12-13 22:07:14,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:07:14,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 405.0) internal successors, (2835), 7 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:07:14,152 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 405.0) internal successors, (2835), 7 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:07:14,152 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 223 flow. Second operand 6 states and 1305 transitions. [2022-12-13 22:07:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 208 transitions, 1157 flow [2022-12-13 22:08:08,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 208 transitions, 1147 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:08:08,277 INFO L231 Difference]: Finished difference. Result has 82 places, 61 transitions, 268 flow [2022-12-13 22:08:08,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=82, PETRI_TRANSITIONS=61} [2022-12-13 22:08:08,278 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2022-12-13 22:08:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 61 transitions, 268 flow [2022-12-13 22:08:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.85714285714286) internal successors, (1308), 7 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:08:08,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:08:08,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:08:08,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 22:08:08,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:08:08,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:08:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:08:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2048000215, now seen corresponding path program 1 times [2022-12-13 22:08:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:08:08,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377962261] [2022-12-13 22:08:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:08:08,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:08:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:08:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:08:08,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:08:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377962261] [2022-12-13 22:08:08,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377962261] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:08:08,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143807849] [2022-12-13 22:08:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:08:08,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:08:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:08:08,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:08:08,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:08:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:08:08,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:08:08,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:08:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:08:08,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:08:08,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143807849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:08:08,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:08:08,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 22:08:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198844345] [2022-12-13 22:08:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:08:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:08:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:08:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:08:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:08:08,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2022-12-13 22:08:08,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 61 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:08:08,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:08:08,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2022-12-13 22:08:08,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:09:07,872 INFO L130 PetriNetUnfolder]: 620771/743912 cut-off events. [2022-12-13 22:09:07,872 INFO L131 PetriNetUnfolder]: For 1388460/1388571 co-relation queries the response was YES. [2022-12-13 22:09:10,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159904 conditions, 743912 events. 620771/743912 cut-off events. For 1388460/1388571 co-relation queries the response was YES. Maximal size of possible extension queue 24951. Compared 4440435 event pairs, 100006 based on Foata normal form. 0/469642 useless extension candidates. Maximal degree in co-relation 2159883. Up to 333428 conditions per place. [2022-12-13 22:09:12,777 INFO L137 encePairwiseOnDemand]: 402/405 looper letters, 133 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-12-13 22:09:12,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 137 transitions, 885 flow [2022-12-13 22:09:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:09:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:09:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 844 transitions. [2022-12-13 22:09:12,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5209876543209877 [2022-12-13 22:09:12,780 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 844 transitions. [2022-12-13 22:09:12,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 844 transitions. [2022-12-13 22:09:12,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:09:12,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 844 transitions. [2022-12-13 22:09:12,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:12,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 405.0) internal successors, (2025), 5 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:12,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 405.0) internal successors, (2025), 5 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:12,784 INFO L175 Difference]: Start difference. First operand has 82 places, 61 transitions, 268 flow. Second operand 4 states and 844 transitions. [2022-12-13 22:09:12,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 137 transitions, 885 flow [2022-12-13 22:09:14,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 855 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 22:09:14,195 INFO L231 Difference]: Finished difference. Result has 83 places, 60 transitions, 258 flow [2022-12-13 22:09:14,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=83, PETRI_TRANSITIONS=60} [2022-12-13 22:09:14,196 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 20 predicate places. [2022-12-13 22:09:14,196 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 60 transitions, 258 flow [2022-12-13 22:09:14,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:14,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:09:14,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:14,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 22:09:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 22:09:14,398 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:09:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2041631615, now seen corresponding path program 1 times [2022-12-13 22:09:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647537136] [2022-12-13 22:09:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:09:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:14,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647537136] [2022-12-13 22:09:14,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647537136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:09:14,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:09:14,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:09:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527921916] [2022-12-13 22:09:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:09:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:09:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:09:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:09:14,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2022-12-13 22:09:14,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 60 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:09:14,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:09:14,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2022-12-13 22:09:14,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:10:36,103 INFO L130 PetriNetUnfolder]: 821779/1007830 cut-off events. [2022-12-13 22:10:36,103 INFO L131 PetriNetUnfolder]: For 2189955/2191215 co-relation queries the response was YES. [2022-12-13 22:10:39,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871654 conditions, 1007830 events. 821779/1007830 cut-off events. For 2189955/2191215 co-relation queries the response was YES. Maximal size of possible extension queue 34349. Compared 6479456 event pairs, 404784 based on Foata normal form. 16488/690722 useless extension candidates. Maximal degree in co-relation 2871632. Up to 665291 conditions per place. [2022-12-13 22:10:42,797 INFO L137 encePairwiseOnDemand]: 401/405 looper letters, 100 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-12-13 22:10:42,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 649 flow [2022-12-13 22:10:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:10:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:10:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2022-12-13 22:10:42,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5218106995884774 [2022-12-13 22:10:42,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2022-12-13 22:10:42,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2022-12-13 22:10:42,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:10:42,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2022-12-13 22:10:42,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:42,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:42,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:42,803 INFO L175 Difference]: Start difference. First operand has 83 places, 60 transitions, 258 flow. Second operand 3 states and 634 transitions. [2022-12-13 22:10:42,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 649 flow [2022-12-13 22:10:45,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 643 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:10:45,072 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 269 flow [2022-12-13 22:10:45,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2022-12-13 22:10:45,073 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2022-12-13 22:10:45,073 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 269 flow [2022-12-13 22:10:45,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:45,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:10:45,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:45,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:10:45,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-12-13 22:10:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2041631746, now seen corresponding path program 1 times [2022-12-13 22:10:45,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:45,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003740242] [2022-12-13 22:10:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:45,392 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 22:10:45,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:45,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003740242] [2022-12-13 22:10:45,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003740242] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:45,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452155444] [2022-12-13 22:10:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:45,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:45,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:45,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:45,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c39e9a9c-c1f0-4951-8d72-72a3762babc1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:10:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:45,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 22:10:45,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:45,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 22:10:45,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:45,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:10:45,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:45,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:10:45,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:10:45,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 22:10:45,667 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 22:10:45,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:45,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:45,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-12-13 22:10:45,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 22:10:45,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 273 [2022-12-13 22:10:45,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2022-12-13 22:10:45,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2022-12-13 22:10:45,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2022-12-13 22:10:45,970 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 22:10:45,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452155444] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:45,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:45,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 22:10:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825025300] [2022-12-13 22:10:45,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:45,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 22:10:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 22:10:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=237, Unknown=6, NotChecked=0, Total=306 [2022-12-13 22:10:46,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 405 [2022-12-13 22:10:46,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 269 flow. Second operand has 18 states, 18 states have (on average 150.5) internal successors, (2709), 18 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:10:46,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:10:46,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 405 [2022-12-13 22:10:46,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand