./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 726fce4da80b267da781dea82372ef1c43891e7d5d6ac2b3894c611bc25a242b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:59,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:59,741 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:16:59,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:59,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:59,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:59,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:59,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:59,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:59,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:59,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:59,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:59,783 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:59,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:59,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:16:59,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:59,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:59,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:59,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:59,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:16:59,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:59,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:16:59,791 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:16:59,792 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:16:59,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:59,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:16:59,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:59,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:59,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:59,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:59,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:59,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:59,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:59,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:16:59,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:59,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:59,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:59,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:16:59,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:59,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:59,816 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:59,817 INFO L153 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_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 726fce4da80b267da781dea82372ef1c43891e7d5d6ac2b3894c611bc25a242b [2023-11-12 02:17:00,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:00,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:00,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:00,204 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:00,204 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:00,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-lit/sssc12_variant.i [2023-11-12 02:17:03,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:03,896 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:03,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/sv-benchmarks/c/pthread-lit/sssc12_variant.i [2023-11-12 02:17:03,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/data/365c8d21e/74e8275dea6a41d7b1e4396b2a2b22b0/FLAGbf1b701e5 [2023-11-12 02:17:03,934 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/data/365c8d21e/74e8275dea6a41d7b1e4396b2a2b22b0 [2023-11-12 02:17:03,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:03,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:03,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:03,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:03,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:03,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:03" (1/1) ... [2023-11-12 02:17:03,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2926f308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:03, skipping insertion in model container [2023-11-12 02:17:03,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:03" (1/1) ... [2023-11-12 02:17:04,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:04,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:04,598 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:04,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:04,762 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:04,762 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:04,771 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:04,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04 WrapperNode [2023-11-12 02:17:04,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:04,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:04,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:04,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:04,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,856 INFO L138 Inliner]: procedures = 275, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 96 [2023-11-12 02:17:04,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:04,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:04,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:04,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:04,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:04,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:04,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:04,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:04,928 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (1/1) ... [2023-11-12 02:17:04,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:04,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:04,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:04,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2bc0f02-8695-4986-b45b-4f00d0e1224a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:17:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-12 02:17:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-12 02:17:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:05,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:05,025 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:17:05,255 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:05,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:05,590 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:05,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:05,666 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:17:05,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:05 BoogieIcfgContainer [2023-11-12 02:17:05,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:05,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:05,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:05,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:05,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:03" (1/3) ... [2023-11-12 02:17:05,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a13e74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:05, skipping insertion in model container [2023-11-12 02:17:05,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:04" (2/3) ... [2023-11-12 02:17:05,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a13e74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:05, skipping insertion in model container [2023-11-12 02:17:05,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:05" (3/3) ... [2023-11-12 02:17:05,683 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2023-11-12 02:17:05,694 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:05,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:05,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:17:05,708 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:05,783 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:17:05,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 101 transitions, 206 flow [2023-11-12 02:17:05,933 INFO L124 PetriNetUnfolderBase]: 8/114 cut-off events. [2023-11-12 02:17:05,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:05,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 8/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-11-12 02:17:05,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 101 transitions, 206 flow [2023-11-12 02:17:05,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 101 transitions, 206 flow [2023-11-12 02:17:05,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:05,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 101 transitions, 206 flow [2023-11-12 02:17:05,972 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 101 transitions, 206 flow [2023-11-12 02:17:05,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 101 transitions, 206 flow [2023-11-12 02:17:06,028 INFO L124 PetriNetUnfolderBase]: 8/114 cut-off events. [2023-11-12 02:17:06,028 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:06,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 8/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-11-12 02:17:06,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 1632 [2023-11-12 02:17:10,522 INFO L134 LiptonReduction]: Checked pairs total: 1746 [2023-11-12 02:17:10,523 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-12 02:17:10,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:10,545 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=LoopHeads, 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;@66db8f63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:10,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:17:10,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:10,550 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-12 02:17:10,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:10,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:10,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:17:10,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:17:10,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 14519896, now seen corresponding path program 1 times [2023-11-12 02:17:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:10,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626943143] [2023-11-12 02:17:10,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:10,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:10,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:10,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626943143] [2023-11-12 02:17:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626943143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:10,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:10,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982015159] [2023-11-12 02:17:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:10,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:10,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 215 [2023-11-12 02:17:10,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:10,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 215 [2023-11-12 02:17:10,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:11,032 INFO L124 PetriNetUnfolderBase]: 13/37 cut-off events. [2023-11-12 02:17:11,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:11,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 37 events. 13/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 63. Up to 29 conditions per place. [2023-11-12 02:17:11,034 INFO L140 encePairwiseOnDemand]: 208/215 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-11-12 02:17:11,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 14 transitions, 56 flow [2023-11-12 02:17:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-12 02:17:11,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2023-11-12 02:17:11,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-12 02:17:11,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-12 02:17:11,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:11,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-12 02:17:11,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,080 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 38 flow. Second operand 3 states and 270 transitions. [2023-11-12 02:17:11,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 14 transitions, 56 flow [2023-11-12 02:17:11,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:17:11,085 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 32 flow [2023-11-12 02:17:11,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-12 02:17:11,095 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -3 predicate places. [2023-11-12 02:17:11,095 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 32 flow [2023-11-12 02:17:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:11,096 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:17:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:11,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:17:11,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1068649338, now seen corresponding path program 1 times [2023-11-12 02:17:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:11,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120757494] [2023-11-12 02:17:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:11,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:11,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:11,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:17:11,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 02:17:11,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 02:17:11,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 02:17:11,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 02:17:11,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 02:17:11,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 02:17:11,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 02:17:11,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 02:17:11,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 02:17:11,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 02:17:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 02:17:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 02:17:11,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 02:17:11,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:11,184 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:17:11,187 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:17:11,187 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:17:11,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:17:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 153 transitions, 316 flow [2023-11-12 02:17:11,257 INFO L124 PetriNetUnfolderBase]: 14/181 cut-off events. [2023-11-12 02:17:11,257 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:17:11,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 181 events. 14/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 393 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-11-12 02:17:11,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 153 transitions, 316 flow [2023-11-12 02:17:11,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 153 transitions, 316 flow [2023-11-12 02:17:11,263 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:11,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 153 transitions, 316 flow [2023-11-12 02:17:11,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 153 transitions, 316 flow [2023-11-12 02:17:11,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 153 transitions, 316 flow [2023-11-12 02:17:11,296 INFO L124 PetriNetUnfolderBase]: 14/181 cut-off events. [2023-11-12 02:17:11,296 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:17:11,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 181 events. 14/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 393 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-11-12 02:17:11,306 INFO L119 LiptonReduction]: Number of co-enabled transitions 8568 [2023-11-12 02:17:15,032 INFO L134 LiptonReduction]: Checked pairs total: 27718 [2023-11-12 02:17:15,032 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-11-12 02:17:15,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:15,053 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=LoopHeads, 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;@66db8f63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:15,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-12 02:17:15,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:15,062 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:17:15,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:15,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:15,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:17:15,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:15,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash 782513745, now seen corresponding path program 1 times [2023-11-12 02:17:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66486324] [2023-11-12 02:17:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:15,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66486324] [2023-11-12 02:17:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66486324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:15,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:15,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596040805] [2023-11-12 02:17:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:15,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-11-12 02:17:15,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:15,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-11-12 02:17:15,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:15,628 INFO L124 PetriNetUnfolderBase]: 904/1659 cut-off events. [2023-11-12 02:17:15,628 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:17:15,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3186 conditions, 1659 events. 904/1659 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10454 event pairs, 415 based on Foata normal form. 86/1365 useless extension candidates. Maximal degree in co-relation 1405. Up to 759 conditions per place. [2023-11-12 02:17:15,650 INFO L140 encePairwiseOnDemand]: 280/293 looper letters, 53 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-11-12 02:17:15,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 289 flow [2023-11-12 02:17:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-12 02:17:15,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005688282138794 [2023-11-12 02:17:15,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-12 02:17:15,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-12 02:17:15,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:15,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-12 02:17:15,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,664 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 114 flow. Second operand 3 states and 440 transitions. [2023-11-12 02:17:15,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 289 flow [2023-11-12 02:17:15,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:17:15,669 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 170 flow [2023-11-12 02:17:15,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-11-12 02:17:15,670 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-11-12 02:17:15,671 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 170 flow [2023-11-12 02:17:15,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:15,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:17:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:17:15,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:15,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1511877043, now seen corresponding path program 1 times [2023-11-12 02:17:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:15,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260155878] [2023-11-12 02:17:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:15,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:15,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260155878] [2023-11-12 02:17:15,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260155878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:15,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:15,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457165900] [2023-11-12 02:17:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:15,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:15,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-11-12 02:17:15,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:15,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-11-12 02:17:15,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:16,152 INFO L124 PetriNetUnfolderBase]: 766/1395 cut-off events. [2023-11-12 02:17:16,152 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2023-11-12 02:17:16,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1395 events. 766/1395 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8470 event pairs, 319 based on Foata normal form. 68/1150 useless extension candidates. Maximal degree in co-relation 1579. Up to 626 conditions per place. [2023-11-12 02:17:16,167 INFO L140 encePairwiseOnDemand]: 282/293 looper letters, 49 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2023-11-12 02:17:16,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 313 flow [2023-11-12 02:17:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-12 02:17:16,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49146757679180886 [2023-11-12 02:17:16,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-12 02:17:16,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-12 02:17:16,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:16,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-12 02:17:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,178 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 170 flow. Second operand 3 states and 432 transitions. [2023-11-12 02:17:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 313 flow [2023-11-12 02:17:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:16,182 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 154 flow [2023-11-12 02:17:16,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-12 02:17:16,184 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-11-12 02:17:16,184 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 154 flow [2023-11-12 02:17:16,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:16,185 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:17:16,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:17:16,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:17:16,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -510994255, now seen corresponding path program 1 times [2023-11-12 02:17:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:16,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057473960] [2023-11-12 02:17:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:16,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:16,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:16,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:16,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:17:16,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-12 02:17:16,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-12 02:17:16,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-12 02:17:16,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-12 02:17:16,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-12 02:17:16,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-12 02:17:16,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-12 02:17:16,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-12 02:17:16,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-12 02:17:16,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-12 02:17:16,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-12 02:17:16,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-12 02:17:16,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-12 02:17:16,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-12 02:17:16,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-12 02:17:16,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-12 02:17:16,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-12 02:17:16,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-12 02:17:16,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-12 02:17:16,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:17:16,235 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-12 02:17:16,236 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:17:16,236 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:17:16,269 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:17:16,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 205 transitions, 428 flow [2023-11-12 02:17:16,311 INFO L124 PetriNetUnfolderBase]: 20/248 cut-off events. [2023-11-12 02:17:16,311 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:17:16,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 20/248 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 185. Up to 8 conditions per place. [2023-11-12 02:17:16,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 205 transitions, 428 flow [2023-11-12 02:17:16,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 205 transitions, 428 flow [2023-11-12 02:17:16,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:16,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 205 transitions, 428 flow [2023-11-12 02:17:16,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 205 transitions, 428 flow [2023-11-12 02:17:16,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 205 transitions, 428 flow [2023-11-12 02:17:16,358 INFO L124 PetriNetUnfolderBase]: 20/248 cut-off events. [2023-11-12 02:17:16,358 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:17:16,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 20/248 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 185. Up to 8 conditions per place. [2023-11-12 02:17:16,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 20808 [2023-11-12 02:17:20,255 INFO L134 LiptonReduction]: Checked pairs total: 70156 [2023-11-12 02:17:20,256 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-12 02:17:20,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:20,259 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=LoopHeads, 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;@66db8f63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:20,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-12 02:17:20,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:20,262 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:17:20,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:20,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:20,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:17:20,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:17:20,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1191699765, now seen corresponding path program 1 times [2023-11-12 02:17:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:20,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836218858] [2023-11-12 02:17:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:20,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:20,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:20,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836218858] [2023-11-12 02:17:20,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836218858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:20,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:20,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343200468] [2023-11-12 02:17:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:20,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 377 [2023-11-12 02:17:20,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:20,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 377 [2023-11-12 02:17:20,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:24,028 INFO L124 PetriNetUnfolderBase]: 16452/24535 cut-off events. [2023-11-12 02:17:24,028 INFO L125 PetriNetUnfolderBase]: For 1471/1471 co-relation queries the response was YES. [2023-11-12 02:17:24,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48085 conditions, 24535 events. 16452/24535 cut-off events. For 1471/1471 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 179773 event pairs, 6661 based on Foata normal form. 3167/22736 useless extension candidates. Maximal degree in co-relation 12245. Up to 16348 conditions per place. [2023-11-12 02:17:24,321 INFO L140 encePairwiseOnDemand]: 357/377 looper letters, 78 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-11-12 02:17:24,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 108 transitions, 410 flow [2023-11-12 02:17:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-11-12 02:17:24,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251989389920424 [2023-11-12 02:17:24,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-11-12 02:17:24,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-11-12 02:17:24,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:24,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-11-12 02:17:24,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,335 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 174 flow. Second operand 3 states and 594 transitions. [2023-11-12 02:17:24,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 108 transitions, 410 flow [2023-11-12 02:17:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 108 transitions, 406 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-12 02:17:24,346 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 212 flow [2023-11-12 02:17:24,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2023-11-12 02:17:24,351 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-11-12 02:17:24,351 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 212 flow [2023-11-12 02:17:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:24,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:24,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:17:24,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:17:24,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1323175366, now seen corresponding path program 1 times [2023-11-12 02:17:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925431333] [2023-11-12 02:17:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:24,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925431333] [2023-11-12 02:17:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925431333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:24,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:24,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:24,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898943486] [2023-11-12 02:17:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:24,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:24,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 377 [2023-11-12 02:17:24,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:24,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:24,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 377 [2023-11-12 02:17:24,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:27,743 INFO L124 PetriNetUnfolderBase]: 13871/21668 cut-off events. [2023-11-12 02:17:27,750 INFO L125 PetriNetUnfolderBase]: For 2679/4618 co-relation queries the response was YES. [2023-11-12 02:17:27,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44898 conditions, 21668 events. 13871/21668 cut-off events. For 2679/4618 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 165021 event pairs, 7505 based on Foata normal form. 14/17562 useless extension candidates. Maximal degree in co-relation 38314. Up to 11555 conditions per place. [2023-11-12 02:17:28,013 INFO L140 encePairwiseOnDemand]: 374/377 looper letters, 71 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-11-12 02:17:28,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 440 flow [2023-11-12 02:17:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-11-12 02:17:28,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519893899204244 [2023-11-12 02:17:28,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-11-12 02:17:28,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-11-12 02:17:28,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:28,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-11-12 02:17:28,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,034 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 212 flow. Second operand 3 states and 588 transitions. [2023-11-12 02:17:28,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 440 flow [2023-11-12 02:17:28,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:28,043 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 216 flow [2023-11-12 02:17:28,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-12 02:17:28,047 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-11-12 02:17:28,047 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 216 flow [2023-11-12 02:17:28,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:28,048 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:17:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:17:28,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:17:28,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -289183398, now seen corresponding path program 1 times [2023-11-12 02:17:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:28,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609026037] [2023-11-12 02:17:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:28,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:28,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:28,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:28,119 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:17:28,119 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-12 02:17:28,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-12 02:17:28,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-12 02:17:28,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-12 02:17:28,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-12 02:17:28,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-12 02:17:28,120 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-12 02:17:28,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-12 02:17:28,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-12 02:17:28,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-12 02:17:28,121 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-12 02:17:28,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-12 02:17:28,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-12 02:17:28,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-12 02:17:28,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-12 02:17:28,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-12 02:17:28,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-12 02:17:28,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-12 02:17:28,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-12 02:17:28,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-12 02:17:28,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-12 02:17:28,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-12 02:17:28,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-12 02:17:28,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-12 02:17:28,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-12 02:17:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:17:28,125 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-12 02:17:28,126 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:17:28,126 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-12 02:17:28,180 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:17:28,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 257 transitions, 542 flow [2023-11-12 02:17:28,250 INFO L124 PetriNetUnfolderBase]: 26/315 cut-off events. [2023-11-12 02:17:28,251 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:17:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 315 events. 26/315 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1040 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 256. Up to 10 conditions per place. [2023-11-12 02:17:28,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 257 transitions, 542 flow [2023-11-12 02:17:28,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 257 transitions, 542 flow [2023-11-12 02:17:28,264 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:28,264 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 257 transitions, 542 flow [2023-11-12 02:17:28,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 257 transitions, 542 flow [2023-11-12 02:17:28,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 257 transitions, 542 flow [2023-11-12 02:17:28,322 INFO L124 PetriNetUnfolderBase]: 26/315 cut-off events. [2023-11-12 02:17:28,322 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:17:28,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 315 events. 26/315 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1040 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 256. Up to 10 conditions per place. [2023-11-12 02:17:28,354 INFO L119 LiptonReduction]: Number of co-enabled transitions 38352 [2023-11-12 02:17:32,656 INFO L134 LiptonReduction]: Checked pairs total: 134559 [2023-11-12 02:17:32,656 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-11-12 02:17:32,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:32,659 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=LoopHeads, 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;@66db8f63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:32,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-12 02:17:32,660 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:32,660 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:17:32,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:32,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:32,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:17:32,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 02:17:32,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1692577242, now seen corresponding path program 1 times [2023-11-12 02:17:32,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:32,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197637788] [2023-11-12 02:17:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:32,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:32,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197637788] [2023-11-12 02:17:32,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197637788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:32,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:32,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785779247] [2023-11-12 02:17:32,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:32,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:32,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:32,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:32,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 473 [2023-11-12 02:17:32,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:32,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:32,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 473 [2023-11-12 02:17:32,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand