./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS --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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- 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-4e7fbc6 [2022-11-23 02:26:36,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:26:36,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:26:36,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:26:36,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:26:36,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:26:36,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:26:36,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:26:36,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:26:36,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:26:36,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:26:36,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:26:36,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:26:36,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:26:36,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:26:36,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:26:36,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:26:36,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:26:36,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:26:36,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:26:36,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:26:36,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:26:36,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:26:36,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:26:36,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:26:36,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:26:36,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:26:36,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:26:36,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:26:36,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:26:36,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:26:36,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:26:36,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:26:36,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:26:36,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:26:36,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:26:36,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:26:36,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:26:36,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:26:36,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:26:36,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:26:36,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:26:36,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:26:36,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:26:36,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:26:36,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:26:36,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:26:36,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:26:36,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:26:36,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:26:36,815 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:26:36,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:26:36,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:26:36,821 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:26:36,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:26:36,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:26:36,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:26:36,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:26:36,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:26:36,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:26:36,822 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:26:36,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:26:36,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:26:36,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:26:36,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:26:36,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:26:36,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:26:36,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:26:36,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:26:36,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:26:36,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:26:36,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:26:36,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:26:36,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:26:36,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:26:36,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:26:36,829 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:26:36,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:26:36,829 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_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2022-11-23 02:26:37,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:26:37,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:26:37,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:26:37,189 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:26:37,190 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:26:37,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-11-23 02:26:40,205 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:26:40,619 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:26:40,619 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-11-23 02:26:40,645 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/data/b5aa7e2b2/976990002c6b47d9aec8ec1cbf46527b/FLAG2e2781a19 [2022-11-23 02:26:40,660 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/data/b5aa7e2b2/976990002c6b47d9aec8ec1cbf46527b [2022-11-23 02:26:40,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:26:40,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:26:40,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:26:40,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:26:40,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:26:40,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:40" (1/1) ... [2022-11-23 02:26:40,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55249c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40, skipping insertion in model container [2022-11-23 02:26:40,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:40" (1/1) ... [2022-11-23 02:26:40,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:26:40,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:26:41,601 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_af8129ed-20c3-4cfb-b804-418319674b52/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-11-23 02:26:41,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:26:41,618 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:26:41,684 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_af8129ed-20c3-4cfb-b804-418319674b52/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-11-23 02:26:41,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:26:41,793 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:26:41,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41 WrapperNode [2022-11-23 02:26:41,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:26:41,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:26:41,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:26:41,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:26:41,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,868 INFO L138 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 299 [2022-11-23 02:26:41,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:26:41,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:26:41,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:26:41,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:26:41,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:26:41,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:26:41,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:26:41,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:26:41,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (1/1) ... [2022-11-23 02:26:41,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:26:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:41,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:26:42,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:26:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:26:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:26:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:26:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:26:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:26:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-23 02:26:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-23 02:26:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:26:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:26:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:26:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:26:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:26:42,044 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:26:42,561 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:26:42,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:26:43,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:26:43,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:26:43,168 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 02:26:43,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:43 BoogieIcfgContainer [2022-11-23 02:26:43,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:26:43,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:26:43,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:26:43,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:26:43,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:40" (1/3) ... [2022-11-23 02:26:43,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161c876e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:43, skipping insertion in model container [2022-11-23 02:26:43,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:41" (2/3) ... [2022-11-23 02:26:43,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161c876e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:43, skipping insertion in model container [2022-11-23 02:26:43,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:43" (3/3) ... [2022-11-23 02:26:43,180 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2022-11-23 02:26:43,189 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:26:43,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:26:43,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-23 02:26:43,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:26:43,298 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 02:26:43,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 310 transitions, 628 flow [2022-11-23 02:26:43,450 INFO L130 PetriNetUnfolder]: 19/325 cut-off events. [2022-11-23 02:26:43,451 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:26:43,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 325 events. 19/325 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 561 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 213. Up to 4 conditions per place. [2022-11-23 02:26:43,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 310 transitions, 628 flow [2022-11-23 02:26:43,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 306 transitions, 620 flow [2022-11-23 02:26:43,492 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:26:43,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 306 transitions, 620 flow [2022-11-23 02:26:43,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 306 transitions, 620 flow [2022-11-23 02:26:43,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 306 transitions, 620 flow [2022-11-23 02:26:43,649 INFO L130 PetriNetUnfolder]: 18/321 cut-off events. [2022-11-23 02:26:43,649 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:26:43,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 321 events. 18/321 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 547 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 213. Up to 4 conditions per place. [2022-11-23 02:26:43,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 9450 [2022-11-23 02:26:56,338 INFO L134 LiptonReduction]: Checked pairs total: 10171 [2022-11-23 02:26:56,339 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-11-23 02:26:56,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:26:56,381 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;@4d2db7e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:26:56,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-23 02:26:56,384 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 02:26:56,385 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:26:56,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:56,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:26:56,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 42815, now seen corresponding path program 1 times [2022-11-23 02:26:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:56,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244434365] [2022-11-23 02:26:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:56,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:56,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244434365] [2022-11-23 02:26:56,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244434365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:56,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:56,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:26:56,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677269555] [2022-11-23 02:26:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:56,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:56,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 627 [2022-11-23 02:26:56,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:56,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:26:56,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 627 [2022-11-23 02:26:56,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:26:57,074 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2022-11-23 02:26:57,074 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:26:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 984 event pairs, 110 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 566. Up to 293 conditions per place. [2022-11-23 02:26:57,077 INFO L137 encePairwiseOnDemand]: 616/627 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-11-23 02:26:57,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 174 flow [2022-11-23 02:26:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:26:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2022-11-23 02:26:57,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4768740031897927 [2022-11-23 02:26:57,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2022-11-23 02:26:57,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2022-11-23 02:26:57,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:26:57,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2022-11-23 02:26:57,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,121 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 112 flow. Second operand 3 states and 897 transitions. [2022-11-23 02:26:57,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 174 flow [2022-11-23 02:26:57,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:26:57,127 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 94 flow [2022-11-23 02:26:57,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2022-11-23 02:26:57,133 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 02:26:57,133 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 94 flow [2022-11-23 02:26:57,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:57,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:26:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:26:57,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 43301, now seen corresponding path program 1 times [2022-11-23 02:26:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25982159] [2022-11-23 02:26:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:57,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:57,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25982159] [2022-11-23 02:26:57,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25982159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:57,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:57,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:26:57,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115444686] [2022-11-23 02:26:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:57,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:57,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 627 [2022-11-23 02:26:57,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:26:57,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 627 [2022-11-23 02:26:57,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:26:57,464 INFO L130 PetriNetUnfolder]: 293/586 cut-off events. [2022-11-23 02:26:57,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:26:57,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 586 events. 293/586 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2538 event pairs, 220 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1176. Up to 294 conditions per place. [2022-11-23 02:26:57,467 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2022-11-23 02:26:57,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 81 transitions, 338 flow [2022-11-23 02:26:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:26:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2022-11-23 02:26:57,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2022-11-23 02:26:57,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2022-11-23 02:26:57,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2022-11-23 02:26:57,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:26:57,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2022-11-23 02:26:57,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,481 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 94 flow. Second operand 3 states and 927 transitions. [2022-11-23 02:26:57,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 81 transitions, 338 flow [2022-11-23 02:26:57,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:26:57,484 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 105 flow [2022-11-23 02:26:57,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2022-11-23 02:26:57,485 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2022-11-23 02:26:57,485 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 105 flow [2022-11-23 02:26:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:57,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:26:57,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:26:57,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1347409, now seen corresponding path program 1 times [2022-11-23 02:26:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:57,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635067940] [2022-11-23 02:26:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:57,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:57,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635067940] [2022-11-23 02:26:57,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635067940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:57,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887914895] [2022-11-23 02:26:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:57,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:57,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:57,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:26:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:57,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:26:57,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:57,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:26:57,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887914895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:57,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:26:57,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 02:26:57,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503861400] [2022-11-23 02:26:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:57,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:26:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:26:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:26:57,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 627 [2022-11-23 02:26:57,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:57,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:26:57,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 627 [2022-11-23 02:26:57,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:26:58,053 INFO L130 PetriNetUnfolder]: 293/585 cut-off events. [2022-11-23 02:26:58,053 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:26:58,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 585 events. 293/585 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2514 event pairs, 220 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 1177. Up to 292 conditions per place. [2022-11-23 02:26:58,058 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 77 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2022-11-23 02:26:58,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 341 flow [2022-11-23 02:26:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:26:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:26:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2022-11-23 02:26:58,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48165869218500795 [2022-11-23 02:26:58,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2022-11-23 02:26:58,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2022-11-23 02:26:58,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:26:58,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2022-11-23 02:26:58,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,075 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 105 flow. Second operand 4 states and 1208 transitions. [2022-11-23 02:26:58,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 80 transitions, 341 flow [2022-11-23 02:26:58,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 80 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:26:58,078 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 103 flow [2022-11-23 02:26:58,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-11-23 02:26:58,080 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-23 02:26:58,080 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 103 flow [2022-11-23 02:26:58,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.75) internal successors, (1131), 4 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:58,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:26:58,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:26:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:58,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1294609148, now seen corresponding path program 1 times [2022-11-23 02:26:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813282754] [2022-11-23 02:26:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:58,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813282754] [2022-11-23 02:26:58,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813282754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:58,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:58,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:26:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847125164] [2022-11-23 02:26:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:58,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 627 [2022-11-23 02:26:58,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:26:58,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 627 [2022-11-23 02:26:58,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:26:58,562 INFO L130 PetriNetUnfolder]: 147/294 cut-off events. [2022-11-23 02:26:58,563 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:26:58,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 294 events. 147/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 983 event pairs, 110 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 592. Up to 293 conditions per place. [2022-11-23 02:26:58,565 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-11-23 02:26:58,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 185 flow [2022-11-23 02:26:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:26:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2022-11-23 02:26:58,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2022-11-23 02:26:58,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2022-11-23 02:26:58,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2022-11-23 02:26:58,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:26:58,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2022-11-23 02:26:58,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,577 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 103 flow. Second operand 3 states and 873 transitions. [2022-11-23 02:26:58,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 185 flow [2022-11-23 02:26:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 02:26:58,580 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 106 flow [2022-11-23 02:26:58,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-11-23 02:26:58,581 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2022-11-23 02:26:58,581 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 106 flow [2022-11-23 02:26:58,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:58,582 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:26:58,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:26:58,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1490584912, now seen corresponding path program 1 times [2022-11-23 02:26:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:58,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195919013] [2022-11-23 02:26:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:26:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:58,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195919013] [2022-11-23 02:26:58,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195919013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:58,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:58,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:26:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614923117] [2022-11-23 02:26:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:58,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 627 [2022-11-23 02:26:58,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:26:58,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 627 [2022-11-23 02:26:58,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:26:58,876 INFO L130 PetriNetUnfolder]: 91/211 cut-off events. [2022-11-23 02:26:58,876 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:26:58,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 211 events. 91/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 767 event pairs, 22 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 428. Up to 106 conditions per place. [2022-11-23 02:26:58,878 INFO L137 encePairwiseOnDemand]: 620/627 looper letters, 62 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2022-11-23 02:26:58,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 288 flow [2022-11-23 02:26:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:26:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 898 transitions. [2022-11-23 02:26:58,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47740563530037217 [2022-11-23 02:26:58,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 898 transitions. [2022-11-23 02:26:58,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 898 transitions. [2022-11-23 02:26:58,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:26:58,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 898 transitions. [2022-11-23 02:26:58,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,917 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 106 flow. Second operand 3 states and 898 transitions. [2022-11-23 02:26:58,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 288 flow [2022-11-23 02:26:58,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:26:58,920 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 95 flow [2022-11-23 02:26:58,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2022-11-23 02:26:58,921 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-11-23 02:26:58,921 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 95 flow [2022-11-23 02:26:58,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:58,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:58,923 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:58,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:26:58,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:58,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:58,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2066934782, now seen corresponding path program 1 times [2022-11-23 02:26:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:58,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194595018] [2022-11-23 02:26:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:26:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:59,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194595018] [2022-11-23 02:26:59,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194595018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:59,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738330707] [2022-11-23 02:26:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:59,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:59,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:59,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:26:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:59,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:26:59,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:26:59,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:26:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:26:59,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738330707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:26:59,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:26:59,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-23 02:26:59,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114909734] [2022-11-23 02:26:59,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:26:59,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:26:59,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:26:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:26:59,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 627 [2022-11-23 02:26:59,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 95 flow. Second operand has 8 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:59,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:26:59,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 627 [2022-11-23 02:26:59,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:26:59,653 INFO L130 PetriNetUnfolder]: 91/190 cut-off events. [2022-11-23 02:26:59,653 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-23 02:26:59,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 190 events. 91/190 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 536 event pairs, 66 based on Foata normal form. 1/151 useless extension candidates. Maximal degree in co-relation 432. Up to 187 conditions per place. [2022-11-23 02:26:59,655 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 34 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2022-11-23 02:26:59,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 173 flow [2022-11-23 02:26:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:26:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:26:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1138 transitions. [2022-11-23 02:26:59,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45374800637958534 [2022-11-23 02:26:59,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1138 transitions. [2022-11-23 02:26:59,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1138 transitions. [2022-11-23 02:26:59,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:26:59,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1138 transitions. [2022-11-23 02:26:59,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:59,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:59,669 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:59,669 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 95 flow. Second operand 4 states and 1138 transitions. [2022-11-23 02:26:59,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 173 flow [2022-11-23 02:26:59,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:26:59,671 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 108 flow [2022-11-23 02:26:59,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2022-11-23 02:26:59,672 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2022-11-23 02:26:59,672 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 108 flow [2022-11-23 02:26:59,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.5) internal successors, (2212), 8 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:59,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:26:59,674 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:26:59,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:26:59,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:59,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-23 02:26:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash -613504722, now seen corresponding path program 2 times [2022-11-23 02:26:59,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:59,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664423044] [2022-11-23 02:26:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:26:59,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:26:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:27:00,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:27:00,016 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:27:00,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-23 02:27:00,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-23 02:27:00,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-23 02:27:00,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-23 02:27:00,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-23 02:27:00,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-23 02:27:00,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-23 02:27:00,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-23 02:27:00,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-23 02:27:00,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-23 02:27:00,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-23 02:27:00,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-23 02:27:00,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-23 02:27:00,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-23 02:27:00,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-23 02:27:00,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-23 02:27:00,027 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-23 02:27:00,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-23 02:27:00,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-23 02:27:00,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-23 02:27:00,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-23 02:27:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:27:00,030 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-23 02:27:00,033 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:27:00,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 02:27:00,161 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:27:00,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 501 transitions, 1020 flow [2022-11-23 02:27:00,318 INFO L130 PetriNetUnfolder]: 36/566 cut-off events. [2022-11-23 02:27:00,318 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:27:00,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 566 events. 36/566 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1811 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 420. Up to 8 conditions per place. [2022-11-23 02:27:00,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 501 transitions, 1020 flow [2022-11-23 02:27:00,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 476 places, 501 transitions, 1020 flow [2022-11-23 02:27:00,338 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:27:00,339 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 476 places, 501 transitions, 1020 flow [2022-11-23 02:27:00,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 476 places, 501 transitions, 1020 flow [2022-11-23 02:27:00,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 501 transitions, 1020 flow [2022-11-23 02:27:00,460 INFO L130 PetriNetUnfolder]: 36/566 cut-off events. [2022-11-23 02:27:00,460 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:27:00,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 566 events. 36/566 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1811 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 420. Up to 8 conditions per place. [2022-11-23 02:27:00,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 97524 [2022-11-23 02:27:18,449 INFO L134 LiptonReduction]: Checked pairs total: 100455 [2022-11-23 02:27:18,450 INFO L136 LiptonReduction]: Total number of compositions: 499 [2022-11-23 02:27:18,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:27:18,453 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;@4d2db7e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:27:18,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-23 02:27:18,455 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 02:27:18,455 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:27:18,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:18,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:27:18,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:18,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:18,456 INFO L85 PathProgramCache]: Analyzing trace with hash 80585, now seen corresponding path program 1 times [2022-11-23 02:27:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:18,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201876291] [2022-11-23 02:27:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:18,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:27:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:18,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201876291] [2022-11-23 02:27:18,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201876291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:27:18,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:27:18,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:27:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320793073] [2022-11-23 02:27:18,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:27:18,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:27:18,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:27:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:27:18,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1000 [2022-11-23 02:27:18,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:18,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:18,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1000 [2022-11-23 02:27:18,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:21,358 INFO L130 PetriNetUnfolder]: 14527/21297 cut-off events. [2022-11-23 02:27:21,358 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-23 02:27:21,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42683 conditions, 21297 events. 14527/21297 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 129178 event pairs, 11718 based on Foata normal form. 0/13328 useless extension candidates. Maximal degree in co-relation 35395. Up to 21228 conditions per place. [2022-11-23 02:27:21,486 INFO L137 encePairwiseOnDemand]: 986/1000 looper letters, 82 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2022-11-23 02:27:21,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 358 flow [2022-11-23 02:27:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:27:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:27:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1458 transitions. [2022-11-23 02:27:21,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.486 [2022-11-23 02:27:21,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1458 transitions. [2022-11-23 02:27:21,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1458 transitions. [2022-11-23 02:27:21,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:21,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1458 transitions. [2022-11-23 02:27:21,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 486.0) internal successors, (1458), 3 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:21,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:21,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:21,505 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 218 flow. Second operand 3 states and 1458 transitions. [2022-11-23 02:27:21,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 358 flow [2022-11-23 02:27:21,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:27:21,508 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 194 flow [2022-11-23 02:27:21,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2022-11-23 02:27:21,509 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -5 predicate places. [2022-11-23 02:27:21,510 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 194 flow [2022-11-23 02:27:21,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:21,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:21,511 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:27:21,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:27:21,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash 81413, now seen corresponding path program 1 times [2022-11-23 02:27:21,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:21,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186509847] [2022-11-23 02:27:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:27:21,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:21,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186509847] [2022-11-23 02:27:21,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186509847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:27:21,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:27:21,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:27:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484269916] [2022-11-23 02:27:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:27:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:27:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:27:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:27:21,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1000 [2022-11-23 02:27:21,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:21,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:21,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1000 [2022-11-23 02:27:21,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:26,461 INFO L130 PetriNetUnfolder]: 29053/42592 cut-off events. [2022-11-23 02:27:26,462 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2022-11-23 02:27:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85360 conditions, 42592 events. 29053/42592 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 285958 event pairs, 23436 based on Foata normal form. 0/26657 useless extension candidates. Maximal degree in co-relation 85352. Up to 21229 conditions per place. [2022-11-23 02:27:26,681 INFO L137 encePairwiseOnDemand]: 997/1000 looper letters, 162 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2022-11-23 02:27:26,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 168 transitions, 698 flow [2022-11-23 02:27:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:27:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:27:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1527 transitions. [2022-11-23 02:27:26,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.509 [2022-11-23 02:27:26,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1527 transitions. [2022-11-23 02:27:26,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1527 transitions. [2022-11-23 02:27:26,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:26,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1527 transitions. [2022-11-23 02:27:26,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.0) internal successors, (1527), 3 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:26,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:26,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:26,697 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 194 flow. Second operand 3 states and 1527 transitions. [2022-11-23 02:27:26,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 168 transitions, 698 flow [2022-11-23 02:27:26,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 168 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:27:26,701 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 205 flow [2022-11-23 02:27:26,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2022-11-23 02:27:26,702 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2022-11-23 02:27:26,702 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 205 flow [2022-11-23 02:27:26,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:26,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:26,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:27:26,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:27:26,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2530475, now seen corresponding path program 1 times [2022-11-23 02:27:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:26,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754624247] [2022-11-23 02:27:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:27:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:26,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754624247] [2022-11-23 02:27:26,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754624247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:27:26,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337276566] [2022-11-23 02:27:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:26,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:27:26,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:27:26,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:27:26,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:27:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:26,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:27:26,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:27:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:27:26,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:27:26,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337276566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:27:26,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:27:26,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-23 02:27:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320208339] [2022-11-23 02:27:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:27:26,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:27:26,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:27:26,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:27:26,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1000 [2022-11-23 02:27:26,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 454.75) internal successors, (1819), 4 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:26,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:26,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1000 [2022-11-23 02:27:26,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:31,428 INFO L130 PetriNetUnfolder]: 29053/42591 cut-off events. [2022-11-23 02:27:31,428 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2022-11-23 02:27:31,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85363 conditions, 42591 events. 29053/42591 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 286351 event pairs, 23436 based on Foata normal form. 0/26659 useless extension candidates. Maximal degree in co-relation 85353. Up to 21227 conditions per place. [2022-11-23 02:27:31,635 INFO L137 encePairwiseOnDemand]: 997/1000 looper letters, 161 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2022-11-23 02:27:31,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 167 transitions, 701 flow [2022-11-23 02:27:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:27:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:27:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1980 transitions. [2022-11-23 02:27:31,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.495 [2022-11-23 02:27:31,642 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1980 transitions. [2022-11-23 02:27:31,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1980 transitions. [2022-11-23 02:27:31,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:31,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1980 transitions. [2022-11-23 02:27:31,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:31,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1000.0) internal successors, (5000), 5 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:31,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1000.0) internal successors, (5000), 5 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:31,658 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 205 flow. Second operand 4 states and 1980 transitions. [2022-11-23 02:27:31,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 167 transitions, 701 flow [2022-11-23 02:27:31,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 167 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:27:31,662 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 203 flow [2022-11-23 02:27:31,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2022-11-23 02:27:31,663 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2022-11-23 02:27:31,663 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 203 flow [2022-11-23 02:27:31,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 454.75) internal successors, (1819), 4 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:31,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:31,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:27:31,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:27:31,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 02:27:31,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1920288266, now seen corresponding path program 1 times [2022-11-23 02:27:31,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:31,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294201572] [2022-11-23 02:27:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:27:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294201572] [2022-11-23 02:27:31,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294201572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:27:31,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:27:31,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:27:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690653630] [2022-11-23 02:27:31,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:27:31,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:27:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:27:31,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:27:32,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 449 out of 1000 [2022-11-23 02:27:32,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:32,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:32,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 449 of 1000 [2022-11-23 02:27:32,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:34,326 INFO L130 PetriNetUnfolder]: 14527/21297 cut-off events. [2022-11-23 02:27:34,326 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-11-23 02:27:34,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42691 conditions, 21297 events. 14527/21297 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 129244 event pairs, 11718 based on Foata normal form. 1/13331 useless extension candidates. Maximal degree in co-relation 42680. Up to 21228 conditions per place. [2022-11-23 02:27:34,438 INFO L137 encePairwiseOnDemand]: 997/1000 looper letters, 81 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-11-23 02:27:34,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 369 flow [2022-11-23 02:27:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:27:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:27:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1431 transitions. [2022-11-23 02:27:34,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.477 [2022-11-23 02:27:34,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1431 transitions. [2022-11-23 02:27:34,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1431 transitions. [2022-11-23 02:27:34,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:34,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1431 transitions. [2022-11-23 02:27:34,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:34,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:34,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:34,460 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 203 flow. Second operand 3 states and 1431 transitions. [2022-11-23 02:27:34,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 369 flow [2022-11-23 02:27:34,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 364 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 02:27:34,464 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 206 flow [2022-11-23 02:27:34,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2022-11-23 02:27:34,466 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2022-11-23 02:27:34,466 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 206 flow [2022-11-23 02:27:34,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:34,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:34,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:27:34,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:27:34,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 687101340, now seen corresponding path program 1 times [2022-11-23 02:27:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:34,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255730684] [2022-11-23 02:27:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:27:34,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:34,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255730684] [2022-11-23 02:27:34,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255730684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:27:34,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:27:34,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:27:34,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258769804] [2022-11-23 02:27:34,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:27:34,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:27:34,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:27:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:27:34,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1000 [2022-11-23 02:27:34,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:34,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:34,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1000 [2022-11-23 02:27:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:36,494 INFO L130 PetriNetUnfolder]: 12585/18558 cut-off events. [2022-11-23 02:27:36,494 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-23 02:27:36,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37222 conditions, 18558 events. 12585/18558 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 115790 event pairs, 4698 based on Foata normal form. 0/12069 useless extension candidates. Maximal degree in co-relation 37210. Up to 12904 conditions per place. [2022-11-23 02:27:36,582 INFO L137 encePairwiseOnDemand]: 991/1000 looper letters, 151 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2022-11-23 02:27:36,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 159 transitions, 668 flow [2022-11-23 02:27:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:27:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:27:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1505 transitions. [2022-11-23 02:27:36,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5016666666666667 [2022-11-23 02:27:36,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1505 transitions. [2022-11-23 02:27:36,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1505 transitions. [2022-11-23 02:27:36,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:36,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1505 transitions. [2022-11-23 02:27:36,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 501.6666666666667) internal successors, (1505), 3 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:36,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:36,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:36,598 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 206 flow. Second operand 3 states and 1505 transitions. [2022-11-23 02:27:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 159 transitions, 668 flow [2022-11-23 02:27:36,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 159 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:27:36,602 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 228 flow [2022-11-23 02:27:36,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2022-11-23 02:27:36,603 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2022-11-23 02:27:36,603 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 228 flow [2022-11-23 02:27:36,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:36,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:36,604 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:27:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:27:36,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1368684625, now seen corresponding path program 1 times [2022-11-23 02:27:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:36,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911937035] [2022-11-23 02:27:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:27:36,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911937035] [2022-11-23 02:27:36,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911937035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:27:36,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:27:36,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:27:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269480754] [2022-11-23 02:27:36,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:27:36,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:27:36,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:27:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:27:36,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 1000 [2022-11-23 02:27:36,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:36,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:36,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 1000 [2022-11-23 02:27:36,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:38,755 INFO L130 PetriNetUnfolder]: 10736/15854 cut-off events. [2022-11-23 02:27:38,755 INFO L131 PetriNetUnfolder]: For 1111/1111 co-relation queries the response was YES. [2022-11-23 02:27:38,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34446 conditions, 15854 events. 10736/15854 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 90497 event pairs, 6994 based on Foata normal form. 0/11579 useless extension candidates. Maximal degree in co-relation 34434. Up to 12872 conditions per place. [2022-11-23 02:27:38,826 INFO L137 encePairwiseOnDemand]: 992/1000 looper letters, 144 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2022-11-23 02:27:38,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 658 flow [2022-11-23 02:27:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:27:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:27:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1489 transitions. [2022-11-23 02:27:38,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49633333333333335 [2022-11-23 02:27:38,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1489 transitions. [2022-11-23 02:27:38,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1489 transitions. [2022-11-23 02:27:38,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:38,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1489 transitions. [2022-11-23 02:27:38,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:38,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:38,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1000.0) internal successors, (4000), 4 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:38,844 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 228 flow. Second operand 3 states and 1489 transitions. [2022-11-23 02:27:38,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 658 flow [2022-11-23 02:27:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 154 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:27:39,008 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 245 flow [2022-11-23 02:27:39,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2022-11-23 02:27:39,009 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2022-11-23 02:27:39,010 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 245 flow [2022-11-23 02:27:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:39,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:39,011 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:27:39,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:27:39,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1368684363, now seen corresponding path program 1 times [2022-11-23 02:27:39,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:39,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537676681] [2022-11-23 02:27:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:39,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:27:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:27:39,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537676681] [2022-11-23 02:27:39,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537676681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:27:39,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084181454] [2022-11-23 02:27:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:39,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:27:39,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:27:39,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:27:39,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:27:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:27:39,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:27:39,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:27:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:27:39,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:27:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:27:39,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084181454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:27:39,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:27:39,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-23 02:27:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036573121] [2022-11-23 02:27:39,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:27:39,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:27:39,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:27:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:27:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:27:39,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1000 [2022-11-23 02:27:39,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 437.5) internal successors, (3500), 8 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:39,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:27:39,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1000 [2022-11-23 02:27:39,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:27:41,395 INFO L130 PetriNetUnfolder]: 8888/13292 cut-off events. [2022-11-23 02:27:41,395 INFO L131 PetriNetUnfolder]: For 10027/10027 co-relation queries the response was YES. [2022-11-23 02:27:41,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33475 conditions, 13292 events. 8888/13292 cut-off events. For 10027/10027 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 78317 event pairs, 3186 based on Foata normal form. 786/11148 useless extension candidates. Maximal degree in co-relation 33463. Up to 7633 conditions per place. [2022-11-23 02:27:41,596 INFO L137 encePairwiseOnDemand]: 992/1000 looper letters, 143 selfloop transitions, 7 changer transitions 2/155 dead transitions. [2022-11-23 02:27:41,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 155 transitions, 687 flow [2022-11-23 02:27:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:27:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:27:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2765 transitions. [2022-11-23 02:27:41,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4608333333333333 [2022-11-23 02:27:41,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2765 transitions. [2022-11-23 02:27:41,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2765 transitions. [2022-11-23 02:27:41,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:27:41,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2765 transitions. [2022-11-23 02:27:41,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 460.8333333333333) internal successors, (2765), 6 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:41,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1000.0) internal successors, (7000), 7 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:41,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1000.0) internal successors, (7000), 7 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:41,626 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 245 flow. Second operand 6 states and 2765 transitions. [2022-11-23 02:27:41,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 155 transitions, 687 flow [2022-11-23 02:27:41,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 155 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:27:41,632 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 252 flow [2022-11-23 02:27:41,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1000, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2022-11-23 02:27:41,633 INFO L288 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2022-11-23 02:27:41,633 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 252 flow [2022-11-23 02:27:41,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.5) internal successors, (3500), 8 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:27:41,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:27:41,635 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 02:27:41,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:27:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8129ed-20c3-4cfb-b804-418319674b52/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 02:27:41,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-23 02:27:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:27:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1560283107, now seen corresponding path program 1 times [2022-11-23 02:27:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:27:41,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535867077] [2022-11-23 02:27:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:27:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:27:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:27:41,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:27:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:27:41,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:27:41,959 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:27:41,961 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-23 02:27:41,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-23 02:27:41,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-23 02:27:41,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-23 02:27:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-23 02:27:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-23 02:27:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-23 02:27:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-23 02:27:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-23 02:27:41,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-23 02:27:41,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-23 02:27:41,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-23 02:27:41,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-23 02:27:41,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-23 02:27:41,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-23 02:27:41,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-23 02:27:41,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-23 02:27:41,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-23 02:27:41,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-23 02:27:41,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-23 02:27:41,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-23 02:27:41,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-23 02:27:41,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-23 02:27:41,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-23 02:27:41,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-23 02:27:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:27:41,969 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:27:41,970 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:27:41,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 02:27:42,055 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:27:42,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 656 places, 692 transitions, 1414 flow [2022-11-23 02:27:42,306 INFO L130 PetriNetUnfolder]: 58/844 cut-off events. [2022-11-23 02:27:42,306 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:27:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 844 events. 58/844 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3670 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2022-11-23 02:27:42,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 656 places, 692 transitions, 1414 flow [2022-11-23 02:27:42,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 656 places, 692 transitions, 1414 flow [2022-11-23 02:27:42,340 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:27:42,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 656 places, 692 transitions, 1414 flow [2022-11-23 02:27:42,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 656 places, 692 transitions, 1414 flow [2022-11-23 02:27:42,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 656 places, 692 transitions, 1414 flow [2022-11-23 02:27:42,577 INFO L130 PetriNetUnfolder]: 58/844 cut-off events. [2022-11-23 02:27:42,577 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:27:42,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 844 events. 58/844 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3670 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2022-11-23 02:27:42,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 255150 [2022-11-23 02:28:34,717 INFO L134 LiptonReduction]: Checked pairs total: 272873 [2022-11-23 02:28:34,717 INFO L136 LiptonReduction]: Total number of compositions: 683 [2022-11-23 02:28:34,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:28:34,719 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;@4d2db7e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:28:34,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-23 02:28:34,721 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 02:28:34,722 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:28:34,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:28:34,722 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:28:34,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-23 02:28:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:28:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash 130322, now seen corresponding path program 1 times [2022-11-23 02:28:34,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:28:34,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801560927] [2022-11-23 02:28:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:28:34,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:28:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:28:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:28:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:28:34,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801560927] [2022-11-23 02:28:34,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801560927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:28:34,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:28:34,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:28:34,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415905689] [2022-11-23 02:28:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:28:34,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:28:34,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:28:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:28:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:28:34,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 626 out of 1375 [2022-11-23 02:28:34,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:28:34,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:28:34,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 626 of 1375 [2022-11-23 02:28:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand