./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:24:41,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:24:41,821 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:24:41,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:24:41,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:24:41,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:24:41,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:24:41,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:24:41,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:24:41,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:24:41,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:24:41,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:24:41,858 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:24:41,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:24:41,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:24:41,859 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:24:41,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:24:41,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:24:41,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:24:41,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:24:41,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:24:41,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:24:41,864 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:24:41,864 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:24:41,865 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:24:41,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:24:41,866 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:24:41,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:24:41,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:24:41,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:24:41,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:41,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:24:41,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:24:41,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:24:41,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:24:41,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:24:41,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:24:41,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:24:41,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:24:41,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:24:41,872 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:24:41,877 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_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 [2023-11-06 22:24:42,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:24:42,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:24:42,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:24:42,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:24:42,187 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:24:42,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-06 22:24:45,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:24:45,868 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:24:45,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-06 22:24:45,887 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/data/51ccec18b/bda3f3365d164e2a8ee4688dd4f9cfdc/FLAG3d9b1734b [2023-11-06 22:24:45,901 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/data/51ccec18b/bda3f3365d164e2a8ee4688dd4f9cfdc [2023-11-06 22:24:45,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:24:45,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:24:45,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:45,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:24:45,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:24:45,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:45" (1/1) ... [2023-11-06 22:24:45,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510488b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:45, skipping insertion in model container [2023-11-06 22:24:45,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:45" (1/1) ... [2023-11-06 22:24:46,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:24:46,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:46,548 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:24:46,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:46,696 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:46,697 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:46,705 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:24:46,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46 WrapperNode [2023-11-06 22:24:46,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:46,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:46,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:24:46,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:24:46,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,778 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 91 [2023-11-06 22:24:46,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:46,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:24:46,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:24:46,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:24:46,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:24:46,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:24:46,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:24:46,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:24:46,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (1/1) ... [2023-11-06 22:24:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:46,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:46,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:24:46,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e4c909-3d20-4174-ba22-1158fa399eb6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:24:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:24:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-06 22:24:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-06 22:24:46,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:24:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:24:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:24:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:24:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:24:46,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:24:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:24:46,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:24:46,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:24:46,914 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:24:47,044 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:24:47,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:24:47,224 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:24:47,275 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:24:47,275 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:24:47,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:47 BoogieIcfgContainer [2023-11-06 22:24:47,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:24:47,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:24:47,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:24:47,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:24:47,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:24:45" (1/3) ... [2023-11-06 22:24:47,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783aff8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:47, skipping insertion in model container [2023-11-06 22:24:47,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:46" (2/3) ... [2023-11-06 22:24:47,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783aff8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:47, skipping insertion in model container [2023-11-06 22:24:47,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:47" (3/3) ... [2023-11-06 22:24:47,288 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2023-11-06 22:24:47,297 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:24:47,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:24:47,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:24:47,308 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:24:47,374 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:24:47,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 94 transitions, 192 flow [2023-11-06 22:24:47,467 INFO L124 PetriNetUnfolderBase]: 8/106 cut-off events. [2023-11-06 22:24:47,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:24:47,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 8/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-06 22:24:47,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 94 transitions, 192 flow [2023-11-06 22:24:47,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 94 transitions, 192 flow [2023-11-06 22:24:47,485 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:24:47,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 94 transitions, 192 flow [2023-11-06 22:24:47,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 94 transitions, 192 flow [2023-11-06 22:24:47,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 94 transitions, 192 flow [2023-11-06 22:24:47,537 INFO L124 PetriNetUnfolderBase]: 8/106 cut-off events. [2023-11-06 22:24:47,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:24:47,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 8/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-06 22:24:47,541 INFO L119 LiptonReduction]: Number of co-enabled transitions 1440 [2023-11-06 22:24:51,921 INFO L134 LiptonReduction]: Checked pairs total: 1244 [2023-11-06 22:24:51,921 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-06 22:24:51,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:24:51,950 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74d5bb8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:24:51,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 22:24:51,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:24:51,956 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:24:51,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:24:51,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:51,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:24:51,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:24:51,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 13804362, now seen corresponding path program 1 times [2023-11-06 22:24:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:51,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054426234] [2023-11-06 22:24:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:51,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:52,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:52,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054426234] [2023-11-06 22:24:52,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054426234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:52,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:52,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:24:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425130042] [2023-11-06 22:24:52,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:52,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-11-06 22:24:52,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:52,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-11-06 22:24:52,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:52,537 INFO L124 PetriNetUnfolderBase]: 9/24 cut-off events. [2023-11-06 22:24:52,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:24:52,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 24 events. 9/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 40. Up to 19 conditions per place. [2023-11-06 22:24:52,539 INFO L140 encePairwiseOnDemand]: 194/202 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-11-06 22:24:52,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 11 transitions, 46 flow [2023-11-06 22:24:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-06 22:24:52,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40924092409240925 [2023-11-06 22:24:52,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-06 22:24:52,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-06 22:24:52,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:52,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-06 22:24:52,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,579 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 3 states and 248 transitions. [2023-11-06 22:24:52,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 11 transitions, 46 flow [2023-11-06 22:24:52,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:24:52,584 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 26 flow [2023-11-06 22:24:52,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2023-11-06 22:24:52,591 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -4 predicate places. [2023-11-06 22:24:52,591 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 26 flow [2023-11-06 22:24:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:52,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:24:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:24:52,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:24:52,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 427936260, now seen corresponding path program 1 times [2023-11-06 22:24:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123536051] [2023-11-06 22:24:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:52,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123536051] [2023-11-06 22:24:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123536051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:52,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:52,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:24:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212894569] [2023-11-06 22:24:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:52,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:52,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 202 [2023-11-06 22:24:52,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:52,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 202 [2023-11-06 22:24:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:52,786 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-06 22:24:52,786 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:24:52,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 33. Up to 18 conditions per place. [2023-11-06 22:24:52,787 INFO L140 encePairwiseOnDemand]: 200/202 looper letters, 6 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2023-11-06 22:24:52,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 8 transitions, 38 flow [2023-11-06 22:24:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-06 22:24:52,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41914191419141916 [2023-11-06 22:24:52,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-06 22:24:52,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-06 22:24:52,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:52,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-06 22:24:52,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,799 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 26 flow. Second operand 3 states and 254 transitions. [2023-11-06 22:24:52,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 8 transitions, 38 flow [2023-11-06 22:24:52,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:52,800 INFO L231 Difference]: Finished difference. Result has 12 places, 8 transitions, 22 flow [2023-11-06 22:24:52,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2023-11-06 22:24:52,802 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -5 predicate places. [2023-11-06 22:24:52,802 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 22 flow [2023-11-06 22:24:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:52,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:52,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:24:52,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:24:52,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:24:52,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash 381044211, now seen corresponding path program 1 times [2023-11-06 22:24:52,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:52,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736602244] [2023-11-06 22:24:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:52,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:24:52,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:24:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:24:52,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:24:52,859 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:24:52,860 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-06 22:24:52,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-06 22:24:52,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-06 22:24:52,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-06 22:24:52,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-06 22:24:52,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-06 22:24:52,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-06 22:24:52,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-06 22:24:52,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-06 22:24:52,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-06 22:24:52,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-06 22:24:52,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-06 22:24:52,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-06 22:24:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:24:52,868 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:24:52,871 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:24:52,872 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:24:52,902 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:24:52,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 296 flow [2023-11-06 22:24:52,948 INFO L124 PetriNetUnfolderBase]: 14/169 cut-off events. [2023-11-06 22:24:52,948 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:24:52,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 169 events. 14/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 377 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-11-06 22:24:52,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 143 transitions, 296 flow [2023-11-06 22:24:52,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 143 transitions, 296 flow [2023-11-06 22:24:52,954 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:24:52,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 143 transitions, 296 flow [2023-11-06 22:24:52,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 143 transitions, 296 flow [2023-11-06 22:24:52,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 296 flow [2023-11-06 22:24:52,986 INFO L124 PetriNetUnfolderBase]: 14/169 cut-off events. [2023-11-06 22:24:52,987 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:24:52,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 169 events. 14/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 377 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-11-06 22:24:52,996 INFO L119 LiptonReduction]: Number of co-enabled transitions 7584 [2023-11-06 22:24:56,605 INFO L134 LiptonReduction]: Checked pairs total: 22056 [2023-11-06 22:24:56,605 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-06 22:24:56,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:24:56,614 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74d5bb8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:24:56,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-06 22:24:56,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:24:56,619 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:24:56,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:24:56,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:56,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:24:56,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:24:56,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash 734424619, now seen corresponding path program 1 times [2023-11-06 22:24:56,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563856520] [2023-11-06 22:24:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563856520] [2023-11-06 22:24:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563856520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:56,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:56,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:24:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665322425] [2023-11-06 22:24:56,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:56,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:56,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 276 [2023-11-06 22:24:56,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:56,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:56,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 276 [2023-11-06 22:24:56,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:56,930 INFO L124 PetriNetUnfolderBase]: 540/990 cut-off events. [2023-11-06 22:24:56,930 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 22:24:56,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 990 events. 540/990 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5591 event pairs, 248 based on Foata normal form. 32/806 useless extension candidates. Maximal degree in co-relation 806. Up to 476 conditions per place. [2023-11-06 22:24:56,942 INFO L140 encePairwiseOnDemand]: 262/276 looper letters, 43 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-11-06 22:24:56,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 245 flow [2023-11-06 22:24:56,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-06 22:24:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2023-11-06 22:24:56,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-06 22:24:56,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-06 22:24:56,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:56,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-06 22:24:56,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:56,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:56,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:56,955 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 102 flow. Second operand 3 states and 402 transitions. [2023-11-06 22:24:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 245 flow [2023-11-06 22:24:56,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:24:56,958 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 156 flow [2023-11-06 22:24:56,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-11-06 22:24:56,960 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-06 22:24:56,960 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 156 flow [2023-11-06 22:24:56,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:56,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:56,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:24:56,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:24:56,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:24:56,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:56,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1292327314, now seen corresponding path program 1 times [2023-11-06 22:24:56,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162455606] [2023-11-06 22:24:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:56,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162455606] [2023-11-06 22:24:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162455606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:57,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:24:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872117515] [2023-11-06 22:24:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:57,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 276 [2023-11-06 22:24:57,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:57,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 276 [2023-11-06 22:24:57,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:57,267 INFO L124 PetriNetUnfolderBase]: 432/784 cut-off events. [2023-11-06 22:24:57,267 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-06 22:24:57,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1697 conditions, 784 events. 432/784 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4097 event pairs, 172 based on Foata normal form. 52/663 useless extension candidates. Maximal degree in co-relation 890. Up to 356 conditions per place. [2023-11-06 22:24:57,276 INFO L140 encePairwiseOnDemand]: 265/276 looper letters, 39 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-11-06 22:24:57,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 269 flow [2023-11-06 22:24:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-06 22:24:57,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2023-11-06 22:24:57,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-06 22:24:57,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-06 22:24:57,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:57,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-06 22:24:57,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,286 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 156 flow. Second operand 3 states and 392 transitions. [2023-11-06 22:24:57,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 269 flow [2023-11-06 22:24:57,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:57,291 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 140 flow [2023-11-06 22:24:57,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-06 22:24:57,292 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-06 22:24:57,293 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 140 flow [2023-11-06 22:24:57,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:57,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:57,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:24:57,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:24:57,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash -363169451, now seen corresponding path program 1 times [2023-11-06 22:24:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758809406] [2023-11-06 22:24:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:57,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758809406] [2023-11-06 22:24:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758809406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:57,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:57,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:24:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466697140] [2023-11-06 22:24:57,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:57,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276 [2023-11-06 22:24:57,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:57,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276 [2023-11-06 22:24:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:57,562 INFO L124 PetriNetUnfolderBase]: 421/816 cut-off events. [2023-11-06 22:24:57,562 INFO L125 PetriNetUnfolderBase]: For 171/181 co-relation queries the response was YES. [2023-11-06 22:24:57,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 816 events. 421/816 cut-off events. For 171/181 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4719 event pairs, 168 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 940. Up to 371 conditions per place. [2023-11-06 22:24:57,570 INFO L140 encePairwiseOnDemand]: 272/276 looper letters, 36 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-06 22:24:57,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 249 flow [2023-11-06 22:24:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-06 22:24:57,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2023-11-06 22:24:57,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-06 22:24:57,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-06 22:24:57,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:57,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-06 22:24:57,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,580 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 140 flow. Second operand 3 states and 392 transitions. [2023-11-06 22:24:57,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 249 flow [2023-11-06 22:24:57,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:24:57,583 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 150 flow [2023-11-06 22:24:57,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-06 22:24:57,584 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-11-06 22:24:57,584 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 150 flow [2023-11-06 22:24:57,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:57,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:57,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:24:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:24:57,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:24:57,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2021680720, now seen corresponding path program 1 times [2023-11-06 22:24:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434666775] [2023-11-06 22:24:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:24:57,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:24:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:24:57,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:24:57,617 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:24:57,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-06 22:24:57,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-06 22:24:57,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-06 22:24:57,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-06 22:24:57,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-06 22:24:57,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-06 22:24:57,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-06 22:24:57,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-06 22:24:57,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-06 22:24:57,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-06 22:24:57,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-06 22:24:57,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-06 22:24:57,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-06 22:24:57,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-06 22:24:57,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-06 22:24:57,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-06 22:24:57,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-06 22:24:57,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-06 22:24:57,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-06 22:24:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:24:57,622 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:24:57,623 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:24:57,623 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:24:57,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:24:57,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 192 transitions, 402 flow [2023-11-06 22:24:57,718 INFO L124 PetriNetUnfolderBase]: 20/232 cut-off events. [2023-11-06 22:24:57,718 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:24:57,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 20/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-11-06 22:24:57,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 192 transitions, 402 flow [2023-11-06 22:24:57,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 192 transitions, 402 flow [2023-11-06 22:24:57,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:24:57,726 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 192 transitions, 402 flow [2023-11-06 22:24:57,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 192 transitions, 402 flow [2023-11-06 22:24:57,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 192 transitions, 402 flow [2023-11-06 22:24:57,764 INFO L124 PetriNetUnfolderBase]: 20/232 cut-off events. [2023-11-06 22:24:57,765 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:24:57,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 20/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-11-06 22:24:57,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 18432 [2023-11-06 22:25:02,048 INFO L134 LiptonReduction]: Checked pairs total: 51270 [2023-11-06 22:25:02,048 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-11-06 22:25:02,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:02,052 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74d5bb8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:02,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:25:02,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:02,055 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-06 22:25:02,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:02,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:02,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:25:02,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:25:02,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1129824977, now seen corresponding path program 1 times [2023-11-06 22:25:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:02,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505843745] [2023-11-06 22:25:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:02,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:02,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505843745] [2023-11-06 22:25:02,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505843745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:02,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:02,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760695645] [2023-11-06 22:25:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:02,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-06 22:25:02,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:02,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:02,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-06 22:25:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:04,456 INFO L124 PetriNetUnfolderBase]: 10292/15280 cut-off events. [2023-11-06 22:25:04,457 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2023-11-06 22:25:04,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30190 conditions, 15280 events. 10292/15280 cut-off events. For 1099/1099 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 104952 event pairs, 4256 based on Foata normal form. 464/12298 useless extension candidates. Maximal degree in co-relation 4756. Up to 7441 conditions per place. [2023-11-06 22:25:04,657 INFO L140 encePairwiseOnDemand]: 345/365 looper letters, 64 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-11-06 22:25:04,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 368 flow [2023-11-06 22:25:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-11-06 22:25:04,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940639269406393 [2023-11-06 22:25:04,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-11-06 22:25:04,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-11-06 22:25:04,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:04,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-11-06 22:25:04,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:04,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:04,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:04,674 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 150 flow. Second operand 3 states and 541 transitions. [2023-11-06 22:25:04,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 368 flow [2023-11-06 22:25:04,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 364 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:04,682 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 228 flow [2023-11-06 22:25:04,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-11-06 22:25:04,684 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2023-11-06 22:25:04,685 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 228 flow [2023-11-06 22:25:04,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:04,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:04,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:25:04,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:25:04,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:25:04,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:04,687 INFO L85 PathProgramCache]: Analyzing trace with hash 664836801, now seen corresponding path program 1 times [2023-11-06 22:25:04,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:04,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353164551] [2023-11-06 22:25:04,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:04,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:04,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353164551] [2023-11-06 22:25:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353164551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:04,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:04,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:04,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829686238] [2023-11-06 22:25:04,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:04,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:04,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:04,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-06 22:25:04,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:04,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:04,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-06 22:25:04,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:06,783 INFO L124 PetriNetUnfolderBase]: 8030/11898 cut-off events. [2023-11-06 22:25:06,783 INFO L125 PetriNetUnfolderBase]: For 4609/4609 co-relation queries the response was YES. [2023-11-06 22:25:06,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26567 conditions, 11898 events. 8030/11898 cut-off events. For 4609/4609 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 77471 event pairs, 2978 based on Foata normal form. 770/9994 useless extension candidates. Maximal degree in co-relation 16797. Up to 6313 conditions per place. [2023-11-06 22:25:06,922 INFO L140 encePairwiseOnDemand]: 349/365 looper letters, 73 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2023-11-06 22:25:06,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 512 flow [2023-11-06 22:25:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-11-06 22:25:06,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867579908675799 [2023-11-06 22:25:06,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-11-06 22:25:06,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-11-06 22:25:06,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:06,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-11-06 22:25:06,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:06,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:06,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:06,935 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 228 flow. Second operand 3 states and 533 transitions. [2023-11-06 22:25:06,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 512 flow [2023-11-06 22:25:06,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:06,952 INFO L231 Difference]: Finished difference. Result has 69 places, 83 transitions, 356 flow [2023-11-06 22:25:06,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=83} [2023-11-06 22:25:06,954 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-11-06 22:25:06,954 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 83 transitions, 356 flow [2023-11-06 22:25:06,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:06,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:06,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:06,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:25:06,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:25:06,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2059990283, now seen corresponding path program 1 times [2023-11-06 22:25:06,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:06,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142255938] [2023-11-06 22:25:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:07,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:07,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142255938] [2023-11-06 22:25:07,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142255938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:07,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:07,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18373079] [2023-11-06 22:25:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:07,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:07,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:07,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-11-06 22:25:07,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:07,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:07,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-11-06 22:25:07,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:08,585 INFO L124 PetriNetUnfolderBase]: 7281/11037 cut-off events. [2023-11-06 22:25:08,585 INFO L125 PetriNetUnfolderBase]: For 6342/9153 co-relation queries the response was YES. [2023-11-06 22:25:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25691 conditions, 11037 events. 7281/11037 cut-off events. For 6342/9153 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 73768 event pairs, 3236 based on Foata normal form. 214/8784 useless extension candidates. Maximal degree in co-relation 21363. Up to 5497 conditions per place. [2023-11-06 22:25:08,714 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 75 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-11-06 22:25:08,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 114 transitions, 642 flow [2023-11-06 22:25:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-06 22:25:08,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922374429223744 [2023-11-06 22:25:08,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-06 22:25:08,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-06 22:25:08,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:08,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-06 22:25:08,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:08,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:08,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:08,726 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 356 flow. Second operand 3 states and 539 transitions. [2023-11-06 22:25:08,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 114 transitions, 642 flow [2023-11-06 22:25:08,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:08,738 INFO L231 Difference]: Finished difference. Result has 70 places, 83 transitions, 340 flow [2023-11-06 22:25:08,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=83} [2023-11-06 22:25:08,744 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-11-06 22:25:08,744 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 83 transitions, 340 flow [2023-11-06 22:25:08,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:08,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:08,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:08,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:25:08,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:25:08,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1590238886, now seen corresponding path program 1 times [2023-11-06 22:25:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75922189] [2023-11-06 22:25:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:25:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:08,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75922189] [2023-11-06 22:25:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75922189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:08,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650885668] [2023-11-06 22:25:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:08,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:08,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-11-06 22:25:08,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:08,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:08,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-11-06 22:25:08,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:10,537 INFO L124 PetriNetUnfolderBase]: 7773/12210 cut-off events. [2023-11-06 22:25:10,538 INFO L125 PetriNetUnfolderBase]: For 5441/7409 co-relation queries the response was YES. [2023-11-06 22:25:10,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28068 conditions, 12210 events. 7773/12210 cut-off events. For 5441/7409 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 88902 event pairs, 3371 based on Foata normal form. 220/10360 useless extension candidates. Maximal degree in co-relation 14446. Up to 6216 conditions per place. [2023-11-06 22:25:10,649 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 74 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-11-06 22:25:10,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 113 transitions, 612 flow [2023-11-06 22:25:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-11-06 22:25:10,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491324200913242 [2023-11-06 22:25:10,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-11-06 22:25:10,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-11-06 22:25:10,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:10,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-11-06 22:25:10,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:10,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:10,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:10,659 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 340 flow. Second operand 3 states and 538 transitions. [2023-11-06 22:25:10,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 113 transitions, 612 flow [2023-11-06 22:25:10,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 113 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:10,669 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 346 flow [2023-11-06 22:25:10,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2023-11-06 22:25:10,670 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2023-11-06 22:25:10,670 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 346 flow [2023-11-06 22:25:10,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:10,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:10,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:10,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:25:10,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:25:10,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -979887308, now seen corresponding path program 1 times [2023-11-06 22:25:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352019360] [2023-11-06 22:25:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:10,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:10,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352019360] [2023-11-06 22:25:10,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352019360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:10,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:10,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:10,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570806644] [2023-11-06 22:25:10,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:10,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:25:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:25:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:25:10,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 365 [2023-11-06 22:25:10,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:10,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:10,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 365 [2023-11-06 22:25:10,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:13,865 INFO L124 PetriNetUnfolderBase]: 13773/20191 cut-off events. [2023-11-06 22:25:13,865 INFO L125 PetriNetUnfolderBase]: For 11517/11517 co-relation queries the response was YES. [2023-11-06 22:25:13,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51035 conditions, 20191 events. 13773/20191 cut-off events. For 11517/11517 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 143721 event pairs, 2523 based on Foata normal form. 0/17472 useless extension candidates. Maximal degree in co-relation 50844. Up to 9846 conditions per place. [2023-11-06 22:25:14,065 INFO L140 encePairwiseOnDemand]: 357/365 looper letters, 140 selfloop transitions, 10 changer transitions 0/170 dead transitions. [2023-11-06 22:25:14,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 170 transitions, 991 flow [2023-11-06 22:25:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:25:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2023-11-06 22:25:14,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136986301369864 [2023-11-06 22:25:14,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2023-11-06 22:25:14,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2023-11-06 22:25:14,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:14,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2023-11-06 22:25:14,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:14,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:14,083 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:14,083 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 346 flow. Second operand 5 states and 842 transitions. [2023-11-06 22:25:14,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 170 transitions, 991 flow [2023-11-06 22:25:14,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 170 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:14,097 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 396 flow [2023-11-06 22:25:14,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2023-11-06 22:25:14,101 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-11-06 22:25:14,101 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 396 flow [2023-11-06 22:25:14,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:14,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:14,102 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:25:14,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:25:14,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:25:14,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:14,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1472739418, now seen corresponding path program 1 times [2023-11-06 22:25:14,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:14,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908475167] [2023-11-06 22:25:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:14,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:25:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:14,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:25:14,142 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:25:14,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-06 22:25:14,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-06 22:25:14,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-06 22:25:14,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-06 22:25:14,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-06 22:25:14,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-06 22:25:14,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-06 22:25:14,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-06 22:25:14,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-06 22:25:14,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-06 22:25:14,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-06 22:25:14,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-06 22:25:14,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-06 22:25:14,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-06 22:25:14,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-06 22:25:14,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-06 22:25:14,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-06 22:25:14,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-06 22:25:14,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-06 22:25:14,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-06 22:25:14,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-06 22:25:14,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-06 22:25:14,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-06 22:25:14,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-06 22:25:14,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-06 22:25:14,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:25:14,147 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-06 22:25:14,149 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:25:14,149 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:25:14,190 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:14,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 241 transitions, 510 flow [2023-11-06 22:25:14,247 INFO L124 PetriNetUnfolderBase]: 26/295 cut-off events. [2023-11-06 22:25:14,247 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:25:14,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 295 events. 26/295 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place. [2023-11-06 22:25:14,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 241 transitions, 510 flow [2023-11-06 22:25:14,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 241 transitions, 510 flow [2023-11-06 22:25:14,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:14,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 241 transitions, 510 flow [2023-11-06 22:25:14,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 241 transitions, 510 flow [2023-11-06 22:25:14,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 241 transitions, 510 flow [2023-11-06 22:25:14,302 INFO L124 PetriNetUnfolderBase]: 26/295 cut-off events. [2023-11-06 22:25:14,303 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:25:14,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 295 events. 26/295 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place. [2023-11-06 22:25:14,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 33984 [2023-11-06 22:25:19,182 INFO L134 LiptonReduction]: Checked pairs total: 108182 [2023-11-06 22:25:19,182 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-11-06 22:25:19,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:19,186 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74d5bb8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:19,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 22:25:19,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:19,189 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 22:25:19,189 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:19,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:19,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:25:19,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:25:19,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1605093615, now seen corresponding path program 1 times [2023-11-06 22:25:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908903488] [2023-11-06 22:25:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:19,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908903488] [2023-11-06 22:25:19,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908903488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:19,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:19,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455210282] [2023-11-06 22:25:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:19,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 456 [2023-11-06 22:25:19,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:19,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:19,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 456 [2023-11-06 22:25:19,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:32,733 INFO L124 PetriNetUnfolderBase]: 111541/144305 cut-off events. [2023-11-06 22:25:32,733 INFO L125 PetriNetUnfolderBase]: For 13703/13703 co-relation queries the response was YES. [2023-11-06 22:25:33,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291661 conditions, 144305 events. 111541/144305 cut-off events. For 13703/13703 co-relation queries the response was YES. Maximal size of possible extension queue 8671. Compared 961955 event pairs, 40265 based on Foata normal form. 8324/119046 useless extension candidates. Maximal degree in co-relation 56727. Up to 119669 conditions per place. [2023-11-06 22:25:34,290 INFO L140 encePairwiseOnDemand]: 430/456 looper letters, 83 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-11-06 22:25:34,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 457 flow [2023-11-06 22:25:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-11-06 22:25:34,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2023-11-06 22:25:34,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-11-06 22:25:34,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-11-06 22:25:34,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:34,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-11-06 22:25:34,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,307 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 200 flow. Second operand 3 states and 678 transitions. [2023-11-06 22:25:34,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 457 flow [2023-11-06 22:25:34,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 116 transitions, 445 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:34,326 INFO L231 Difference]: Finished difference. Result has 85 places, 85 transitions, 247 flow [2023-11-06 22:25:34,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2023-11-06 22:25:34,327 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2023-11-06 22:25:34,328 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 247 flow [2023-11-06 22:25:34,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:34,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:34,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:25:34,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:25:34,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1542222959, now seen corresponding path program 1 times [2023-11-06 22:25:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:34,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865387673] [2023-11-06 22:25:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:34,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865387673] [2023-11-06 22:25:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865387673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:34,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525650819] [2023-11-06 22:25:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:34,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 456 [2023-11-06 22:25:34,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:34,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:34,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 456 [2023-11-06 22:25:34,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:49,796 INFO L124 PetriNetUnfolderBase]: 98871/140867 cut-off events. [2023-11-06 22:25:49,796 INFO L125 PetriNetUnfolderBase]: For 23827/58322 co-relation queries the response was YES. [2023-11-06 22:25:50,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301233 conditions, 140867 events. 98871/140867 cut-off events. For 23827/58322 co-relation queries the response was YES. Maximal size of possible extension queue 8006. Compared 1177237 event pairs, 41670 based on Foata normal form. 418/101927 useless extension candidates. Maximal degree in co-relation 151494. Up to 66036 conditions per place. [2023-11-06 22:25:51,441 INFO L140 encePairwiseOnDemand]: 452/456 looper letters, 77 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-11-06 22:25:51,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 120 transitions, 511 flow [2023-11-06 22:25:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:25:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 686 transitions. [2023-11-06 22:25:51,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014619883040936 [2023-11-06 22:25:51,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 686 transitions. [2023-11-06 22:25:51,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 686 transitions. [2023-11-06 22:25:51,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:51,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 686 transitions. [2023-11-06 22:25:51,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:51,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:51,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 456.0) internal successors, (1824), 4 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:51,455 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 247 flow. Second operand 3 states and 686 transitions. [2023-11-06 22:25:51,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 120 transitions, 511 flow [2023-11-06 22:25:51,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:25:51,490 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 257 flow [2023-11-06 22:25:51,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-11-06 22:25:51,491 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2023-11-06 22:25:51,491 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 257 flow [2023-11-06 22:25:51,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:51,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:51,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:51,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:25:51,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-06 22:25:51,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash -564269777, now seen corresponding path program 1 times [2023-11-06 22:25:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:51,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146204910] [2023-11-06 22:25:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:51,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146204910] [2023-11-06 22:25:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146204910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:51,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:51,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:25:51,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143699315] [2023-11-06 22:25:51,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:51,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:51,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:51,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 456 [2023-11-06 22:25:51,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:51,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:51,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 456 [2023-11-06 22:25:51,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand